CN112365755A - Portable college english teaching device - Google Patents
Portable college english teaching device Download PDFInfo
- Publication number
- CN112365755A CN112365755A CN202011447516.2A CN202011447516A CN112365755A CN 112365755 A CN112365755 A CN 112365755A CN 202011447516 A CN202011447516 A CN 202011447516A CN 112365755 A CN112365755 A CN 112365755A
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- Prior art keywords
- bearing frame
- disc
- english teaching
- teaching device
- college english
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
- G09B5/065—Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
Abstract
The invention discloses a portable college English teaching device which comprises a bearing plate, a bearing frame, an auxiliary bearing frame rotating mechanism, a disc storage mechanism and a support, wherein a first fastening belt and a second fastening belt are respectively fixed on the front side and the rear side of the right end face of the bearing plate, a convex block is fixed on the right end face of the bearing frame, the auxiliary bearing frame rotating mechanism is arranged between the bearing plate and the bearing frame, a limited pen container is fixed at the bottom of the bearing frame, a battery pack is placed in the bearing frame, the disc storage mechanism is connected in a storage groove in a clamping mode, the support is fixed on the right end face of the top of the bearing frame, a first opening is formed in the left side of the bearing frame, sound expansion holes are formed in the front side and the rear side of a first video player, and a rotating frame is rotatably connected to the left. This portable college english teaching device has worn behind the device can manually adjust and shoulder to suitable length, and later the teacher can carry the device and teach, and it is more convenient to use.
Description
Technical Field
The invention relates to the technical field related to college English teaching, in particular to a portable college English teaching device.
Background
The first english is only a local language used in england area, with the increasing of english national force, the england is spread and spread all over the world, and english is widely learned and applied in the england, english teaching refers to the process of teaching english to people who are english or not the first language, english teaching relates to a plurality of professional theoretical knowledge including linguistics, second language acquisition, glossaries, sentence law, literature, corpus theory, cognitive psychology and the like, english teaching is a progressive process, english learning is crucial to people who are english or not the first language in the globalization and rapid development today, english learning is a bilingual teaching tutorial publication facing college students and english self-learners in 1983, and aims to closely combine college english teaching practice, reflecting the requirements of teaching and learning, meeting the requirements of readers in different levels, also referring to English courses learned after colleges, being suitable for students of high school English learners and college students in four and six levels of preparatory exam, and also being used as a tutoring material for research. The book is novel in content, flexible and various in selected materials, is a good teacher's friend of a university student, is mainly a teaching tutor publication, generally does not carry academic articles, publishes college English every half year (academic edition), and has a quotation range comprising: linguistics research and language contrast research, translation research and english-american literature research, multimedia teaching design and practice, college english language application ability cultivates the way, college english course system reform, college english classroom teaching method, accept the electronic version and submit, the teacher need use the teaching device at the in-process that carries out college english teaching, current teaching device uses convenient inadequately, and be used for english teaching's video disc can not arrive and accomodate the processing, the operation of depositing of taking of video disc is convenient inadequately, the inconvenient regulation of video player angle on the device simultaneously.
Disclosure of Invention
The invention aims to provide a portable college English teaching device, which solves the problems that the existing teaching device provided in the background technology is not convenient to use, a disc for English teaching cannot be stored, the disc is not convenient to take and store, and the angle of a video player on the device is inconvenient to adjust.
In order to achieve the purpose, the invention provides the following technical scheme: a portable college English teaching device, which comprises a bearing plate, a bearing frame, an auxiliary bearing frame rotating mechanism, a disc storage mechanism and a bracket,
the front side and the rear side of the right end face of the bearing plate are respectively fixed with a first fastening belt and a second fastening belt, and the top of the bearing plate is connected with the top of the first fastening belt and the top of the second fastening belt through shoulder belts;
the right end face of the bearing frame is fixedly provided with a lug, and the lug is rotatably connected to the left side of the bearing plate;
the auxiliary bearing frame rotating mechanism is arranged between the bearing plate and the bearing frame, the auxiliary bearing frame rotating mechanism is positioned on the lower side of the bump, a limiting pen container is fixed at the bottom of the bearing frame, a touch pen is inserted in the limiting pen container, a battery pack is placed in the bearing frame, a disc slot is formed in the upper side of the battery pack, and the disc slot is formed in the front end face of the bearing frame;
the disc storage mechanism is connected in the storage groove in a clamping manner, the storage groove is formed in the front end face of the bearing frame, and the storage groove is positioned on the upper side of the disc slot;
the support, the support is fixed on the right-hand member face at bearer frame top, and the top of support is connected with the microphone, first opening has been seted up in the left side of bearer frame, and the snap-fit is connected with first video player in the first opening, both sides all are provided with the sound amplification hole around the first video player, and the sound amplification hole is seted up on the left end face of bearer frame, the left side rotation at bearer frame top is connected with changes the frame, and changes the left side of frame and seted up the second opening, and the snap-fit is connected with second video player in the second opening simultaneously.
Preferably, first fastening area and second fastening area symmetry set up on the loading board, and the right side of first fastening area is connected with the right side of second fastening area through the magic subsides.
Preferably, the lug is rotatably connected to the bearing plate through a first shaft lever.
Preferably, supplementary bearing frame slewing mechanism includes threaded rod, second axostylus axostyle, spacing sleeve, rotatory piece, and the threaded rod passes through the second axostylus axostyle and rotates the left side of connecting at the loading board, threaded rod threaded connection is in spacing telescopic inboard, and spacing sleeve rotates the right side of connecting at rotatory piece, and rotatory piece passes through the second axostylus axostyle simultaneously and rotates the right side of connecting at the bearing frame.
Preferably, the front side and the rear side of the battery pack are provided with heat dissipation holes, and the heat dissipation holes are formed in the bearing frame.
Preferably, the disc storage mechanism comprises a drawing plate, a fixing bolt, a fixing handle, a containing slot, a disc and a supporting seat, the drawing plate is connected to the bearing frame through the fixing bolt in a threaded manner, and the fixing handle is fixed on the front end face of the drawing plate.
Preferably, the drawing plate is internally provided with a containing groove hole, a disc is arranged in the containing groove hole, the disc is placed on the supporting seat, and the supporting seat is connected in the containing groove hole in a sliding mode.
Preferably, the receiving slot holes are distributed on the drawing plate at equal intervals.
Preferably, the rotating frame is rotatably connected to the bearing frame through a third shaft lever.
Compared with the prior art, the invention has the beneficial effects that: the portable college English teaching device comprises a portable college English teaching device,
(1) the shoulder strap is adjustable, the shoulder strap can be manually adjusted to a proper length after the device is worn, a teacher can carry the device to carry out teaching, and the device is more convenient to use;
(2) the video disc player is provided with a video disc slot, an object placing groove, a drawing plate, a fixing bolt, a fixing handle, a video disc, a supporting seat, a first video player, a sound expansion hole and a second video player, wherein the drawing plate plays a role in containing the video disc, the object placing groove plays a role in containing the drawing plate, the fixing bolt is unscrewed, the fixing handle can be held by a hand to draw the drawing plate forwards, the supporting seat can be manually pressed upwards to eject the corresponding video disc, the video disc can be inserted into the video disc slot for projection after being taken out, at the moment, the first video player and the second video player can display the content in the video disc, the sound can be emitted through the sound expansion hole, and the first video player and the second video player are respectively watched by students and tea;
(3) the auxiliary bearing frame rotating mechanism is manually operated, the bearing frame can rotate under the supporting assistance effect of the auxiliary bearing frame rotating mechanism, the angle of the first video player is convenient to adjust, and the second video player needs to be turned upwards to a proper angle before being used, so that the second video player is convenient to watch;
(4) the touch pen, the first video player and the second video player are arranged, the first video player and the second video player can be clicked by the touch pen after the touch pen is drawn out, and the touch pen can be inserted into the corresponding limiting pen container after being used, so that the touch pen is convenient to store.
(5) Be provided with microphone and public address hole, the mr can arrange to use microphone and public address hole at the in-process of teaching, makes the student can be more clear hear mr's sound.
Drawings
FIG. 1 is a schematic structural view of a front view cross section of the present invention;
FIG. 2 is a schematic view of the front view structure of the present invention;
FIG. 3 is a left side view schematic of the present invention;
FIG. 4 is a schematic view of a disc storage mechanism according to the present invention;
FIG. 5 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
FIG. 6 is an enlarged view of the structure at B in FIG. 1 according to the present invention.
In the figure: 1. the portable electronic device comprises a bearing plate, 2, a first fastening belt, 3, a second fastening belt, 4, a shoulder strap, 5, a bump, 6, a first shaft rod, 7, a bearing frame, 8, an auxiliary bearing frame rotating mechanism, 801, a threaded rod, 802, a second shaft rod, 803, a limiting sleeve, 804, a rotating block, 9, a limiting pen container, 10, a touch pen, 11, a battery pack, 12, a heat dissipation hole, 13, a disk slot, 14, a storage groove, 15, a disk storage mechanism, 1501, a drawing plate, 1502, a fixing bolt, 1503, a fixing handle, 1504, a storage slot hole, 1505, a disk, 1506, a supporting seat, 16, a bracket, 17, a microphone, 18, a first opening, 19, a first video player, 20, a sound amplification hole, 21, a rotating frame, 22, a third shaft rod, 23, a second opening, 24 and a second video player.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed in many different forms and should not be construed as limited to the embodiments set forth herein.
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a portable college English teaching device, which comprises a bearing plate, a bearing frame, an auxiliary bearing frame rotating mechanism, a disc storage mechanism and a bracket,
a first fastening belt and a second fastening belt are respectively fixed on the front side and the rear side of the right end face of the bearing plate, and the top of the bearing plate is connected with the top of the first fastening belt and the top of the second fastening belt through shoulder belts;
a lug is fixed on the right end face of the bearing frame and is rotatably connected to the left side of the bearing plate;
the auxiliary bearing frame rotating mechanism is arranged between the bearing plate and the bearing frame, the auxiliary bearing frame rotating mechanism is positioned on the lower side of the bump, a limiting pen container is fixed at the bottom of the bearing frame, a touch pen is inserted in the limiting pen container, a battery pack is placed in the bearing frame, a disc slot is formed in the upper side of the battery pack, and the disc slot is formed in the front end face of the bearing frame;
the disc storage mechanism is connected in the storage groove in a clamping manner, the storage groove is formed in the front end face of the bearing frame, and the storage groove is located on the upper side of the disc slot;
the support is fixed on the right-hand member face at bearer frame top, and the top of support is connected with the microphone, first opening has been seted up in the left side of bearer frame, and the snap-fit is connected with first video player in the first opening, both sides all are provided with the sound amplification hole around the first video player, and the sound amplification hole is seted up on the left end face of bearer frame, the left side rotation at bearer frame top is connected with changes the frame, and changes the left side of frame and seted up the second opening, and the snap-fit is connected with second video player in the second opening simultaneously.
First fastening area and second fastening area symmetry set up on the loading board, and the right side in first fastening area is connected with the right side in second fastening area through the magic subsides.
The lug is rotatably connected to the bearing plate through a first shaft lever.
Supplementary bearing frame slewing mechanism includes threaded rod, second axostylus axostyle, spacing sleeve, rotatory piece, and the threaded rod passes through the second axostylus axostyle and rotates the left side of connecting at the loading board, threaded rod threaded connection is in spacing telescopic inboard, and spacing sleeve rotates the right side of connecting at rotatory piece, and rotatory piece passes through the second axostylus axostyle simultaneously and rotates the right side of connecting at the bearing frame.
Both sides all are provided with the louvre around the group battery, and the louvre is seted up on bearing frame.
The disc storage mechanism comprises a drawing plate, a fixing bolt, a fixing handle, an accommodating groove hole, a disc and a supporting seat, the drawing plate is connected to the bearing frame through the fixing bolt in a threaded mode, and the fixing handle is fixed to the front end face of the drawing plate.
The drawing plate is internally provided with a containing groove hole, a disc is arranged in the containing groove hole, the disc is placed on the supporting seat, and the supporting seat is connected in the containing groove hole in a sliding mode.
The containing slotted holes are distributed on the drawing plate at equal intervals.
The rotating frame is rotatably connected to the bearing frame through a third shaft lever.
The working principle is as follows: when the portable college English teaching device is used, firstly, the bearing plate 1, the first fastening belt 2, the second fastening belt 3 and the shoulder belt 4 are integrally sleeved on the shoulder, then the first fastening belt 2 and the second fastening belt 3 are manually tightened, then the first fastening belt 2 and the second fastening belt 3 are connected and fixed together by using the magic tapes, then the length of the shoulder belt 4 is adjusted, so that the device can be tightly attached to the body, the battery pack 11 converts direct current into alternating current for the whole device to use under the action of an inverter, the heat dissipation hole 12 can play a role of heat dissipation, after the fixing bolt 1502 is loosened, the fixing handle 1503 can be held by hands to draw out the drawing plate 1501 forwards, then the corresponding disc 1505 can be manually pressed upwards to eject the supporting seat 1506, the disc 1505 is taken out and then inserted into the disc slot 13 to be played, at this time, the first video player 19 and the second video player 24 can display the content in the disc 1505, the sound can be emitted through the sound expansion hole 20, the first video player 19 and the second video player 24 are respectively watched by students and teachers, when the limiting sleeve 803 is manually rotated, the limiting sleeve 803 moves left and right, meanwhile, the threaded rod 801 and the rotating block 804 rotate under the action of the second shaft rod 802 respectively, the threaded rod 801, the limiting sleeve 803 and the rotating block 804 jointly support the bearing frame 7, so that the bearing frame 7 is assisted to rotate, the first video player 19 rotates along with the first video player 19, the angle of the first video player 19 is convenient to adjust, the teacher needs to pull the second video player 24 before using the second video player 24, at the moment, the second video player 24 can be turned upwards to a proper angle under the action of the third shaft rod 22, the stylus 10 can be pulled out to click the first video player 19 and the second video player 24 when the first video player 19 and the second video player 24 are used, after the touch control pen 10 is used up, the touch control pen 10 can be inserted into the corresponding touch control pen 10, meanwhile, a teacher can use the microphone 17 and the sound amplifying hole 20 together to enable students to hear own teaching sounds more clearly, the support 16 is made of carbon steel and can be bent freely, the position of the microphone 17 can be adjusted by manually pulling the support 16, and after the first video player 19 and the second video player 24 are used, the first video player 19 and the second video player 24 can be restored to the original states, so that the storage is convenient.
According to the figures 1 and 2, after the bearing plate 1, the first fastening belt 2, the second fastening belt 3 and the shoulder strap 4 are integrally sleeved on the shoulder, the first fastening belt 2 and the second fastening belt 3 can be manually tightened, and the first fastening belt 2 and the second fastening belt 3 are fixedly connected together by using the magic tape, so that the wearing work of the device is conveniently finished, and the device can be more conformable to the shoulder.
According to fig. 1 and 3, the rotation process of the carrying frame 7 can be realized by operating the auxiliary carrying frame rotating mechanism 8, the projection 5 can rotate under the action of the first shaft lever 6, and the first video player 19 rotates along with the carrying frame 7, so that the angle of the first video player 19 can be conveniently adjusted according to specific requirements.
According to fig. 1, 2 and 5, when the limiting sleeve 803 is manually rotated, the limiting sleeve 803 can move left and right, the threaded rod 801 and the rotating block 804 rotate under the action of the second shaft rod 802, and the threaded rod 801, the limiting sleeve 803 and the rotating block 804 support the bearing frame 7 together, so that the rotation of the auxiliary bearing frame 7 is facilitated.
According to the drawings shown in fig. 1, 2 and 3, after the stylus 10 is drawn out, the first video player 18 and the second video player 19 can be clicked by the stylus 10, and after the stylus 10 is used, the stylus 10 can be inserted into the corresponding limiting pen container 9, so that the storage is convenient.
According to fig. 1 and fig. 2, the battery pack 11 can change direct current into alternating current under the action of the inverter to be used by the whole device, so that the normal use of the device is ensured, in the process of using the battery pack 11, hot gas on the surface of the battery pack 11 can be discharged through the heat dissipation holes 12, the heat dissipation effect is conveniently achieved, the heat dissipation holes 12 are uniformly distributed, and the heat dissipation effect is more comprehensive and efficient.
As shown in fig. 1, 2 and 4, after the fixing bolt 1502 is unscrewed, the fixing handle 1503 can be held by hand to pull out the pulling plate 1501 forward, so that the subsequent operation of taking the disc 1505 is conveniently completed, and after the disc 1505 is taken or placed, the pulling plate 1501 can be inserted back into the storage slot 14 again, so that the storage is convenient.
As shown in fig. 2, 3, 4 and 6, after the drawing plate 1501 is taken out, the supporting seat 1506 can be manually pressed upwards, so that the corresponding disc 1505 can be conveniently ejected according to requirements, and the disc 1505 can be more conveniently taken.
As shown in fig. 1, 2, 4 and 6, a disc 1505 can be placed in the receiving slots 1504 with equal distance, so that all discs 1505 can be separately stored.
According to fig. 1, 2 and 3, when the rotating frame 21 is manually pulled, the rotating frame 21 can rotate upwards under the action of the third shaft rod 22, so as to drive the second video player 24 to rotate, which is convenient for a teacher to watch, and the angle of the second video player 24 can be adjusted according to specific requirements.
According to fig. 2 and 3, a teacher can use the microphone 17 and the sound amplifying hole 20 in combination during teaching, so that students can hear the sound of the teacher more clearly.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a portable college english teaching device, includes loading board (1), carriage (7), supplementary carriage slewing mechanism (8), disc storage mechanism (15) and support (16), its characterized in that:
the front side and the rear side of the right end face of the bearing plate (1) are respectively fixed with a first fastening belt (2) and a second fastening belt (3), and the top of the bearing plate (1) is connected with the top of the first fastening belt (2) and the top of the second fastening belt (3) through shoulder belts (4);
the bearing frame (7), a lug (5) is fixed on the right end face of the bearing frame (7), and the lug (5) is rotatably connected to the left side of the bearing plate (1);
the auxiliary bearing frame rotating mechanism (8) is arranged between the bearing plate (1) and the bearing frame (7), the auxiliary bearing frame rotating mechanism (8) is located on the lower side of the bump (5), a limiting pen container (9) is fixed at the bottom of the bearing frame (7), a touch pen (10) is inserted in the limiting pen container (9), a battery pack (11) is placed in the bearing frame (7), a disc slot (13) is formed in the upper side of the battery pack (11), and the disc slot (13) is formed in the front end face of the bearing frame (7);
the disc storage mechanism (15), the disc storage mechanism (15) is connected in the storage groove (14) in a clamping manner, the storage groove (14) is formed in the front end face of the bearing frame (7), and meanwhile, the storage groove (14) is positioned on the upper side of the disc slot (13);
the microphone comprises a support (16), the support (16) is fixed on the right end face of the top of the bearing frame (7), the top of the support (16) is connected with a microphone (17), a first opening (18) is formed in the left side of the bearing frame (7), a first video player (19) is connected in the first opening (18) in a clamping mode, sound expansion holes (20) are formed in the front side and the rear side of the first video player (19), the sound expansion holes (20) are formed in the left end face of the bearing frame (7), the left side of the top of the bearing frame (7) is connected with a rotating frame (21) in a rotating mode, a second opening (23) is formed in the left side of the rotating frame (21), and meanwhile a second video player (24) is connected in the second opening (23) in a clamping mode.
2. The portable college english teaching device according to claim 1, wherein: first fastening area (2) and second fastening area (3) symmetry set up on loading board (1), and the right side of first fastening area (2) is connected with the right side of second fastening area (3) through the magic subsides.
3. The portable college english teaching device according to claim 2, wherein: the lug (5) is rotatably connected to the bearing plate (1) through a first shaft lever (6).
4. The portable college english teaching device according to claim 1, wherein: supplementary carriage slewing mechanism (8) include threaded rod (801), second shaft lever (802), spacing sleeve (803), rotatory piece (804), and threaded rod (801) rotate through second shaft lever (802) and connect in the left side of loading board (1), threaded rod (801) threaded connection is in the inboard of spacing sleeve (803), and spacing sleeve (803) rotate and connect the right side at rotatory piece (804), and rotatory piece (804) rotate the right side of connecting at carriage (7) through second shaft lever (802) simultaneously.
5. The portable college english teaching device according to claim 1, wherein: both sides all are provided with louvre (12) around group battery (11), and louvre (12) are seted up on bearing frame (7).
6. The portable college english teaching device according to claim 1, wherein: the disc storage mechanism (15) comprises a drawing plate (1501), a fixing bolt (1502), a fixing handle (1503), a containing slot hole (1504), a disc (1505) and a supporting seat (1506), the drawing plate (1501) is in threaded connection with the bearing frame (7) through the fixing bolt (1502), and the fixing handle (1503) is fixed on the front end face of the drawing plate (1501).
7. The portable college english teaching device according to claim 6, wherein: a receiving slot hole (1504) is formed in the drawing plate (1501), a disc (1505) is arranged in the receiving slot hole (1504), the disc (1505) is placed on the supporting seat (1506), and the supporting seat (1506) is connected in the receiving slot hole (1504) in a sliding mode.
8. The portable college english teaching device according to claim 6, wherein: the receiving slots (1504) are distributed on the drawing plate (1501) at equal intervals.
9. The portable college english teaching device according to claim 1, wherein: the rotating frame (21) is rotatably connected to the bearing frame (7) through a third shaft lever (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011447516.2A CN112365755A (en) | 2020-12-09 | 2020-12-09 | Portable college english teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011447516.2A CN112365755A (en) | 2020-12-09 | 2020-12-09 | Portable college english teaching device |
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| Publication Number | Publication Date |
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| CN112365755A true CN112365755A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011447516.2A Pending CN112365755A (en) | 2020-12-09 | 2020-12-09 | Portable college english teaching device |
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| US20050111174A1 (en) * | 2003-10-01 | 2005-05-26 | Keith Jordan | Apparatus |
| CN101154337A (en) * | 2007-08-13 | 2008-04-02 | 谭军 | Video broadcast and information query integrated device at bus station |
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Application publication date: 20210212 |