CN111260972A - Artificial intelligence's online education mobile terminal - Google Patents
Artificial intelligence's online education mobile terminal Download PDFInfo
- Publication number
- CN111260972A CN111260972A CN202010065828.0A CN202010065828A CN111260972A CN 111260972 A CN111260972 A CN 111260972A CN 202010065828 A CN202010065828 A CN 202010065828A CN 111260972 A CN111260972 A CN 111260972A
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- wall
- blackboard
- cleaning plate
- block
- artificial intelligence
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- 238000013473 artificial intelligence Methods 0.000 title claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 37
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
-
- 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
- G09B19/00—Teaching not covered by other main groups of this subclass
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Mechanical Engineering (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Multimedia (AREA)
- Electrically Operated Instructional Devices (AREA)
Abstract
The invention discloses an artificial intelligence online education mobile terminal which comprises a base and a terminal body shell, wherein the terminal body shell is fixed at the upper end of the base, a display screen is arranged on one side of the outer wall of the terminal body shell, a blackboard is arranged below the display screen, a cleaning plate is arranged on one side of the outer wall of the blackboard, a cleaning brush is arranged on one side of the cleaning plate close to the blackboard, fixing clamping blocks are respectively arranged at two ends of the cleaning plate, a telescopic component is fixedly connected to one end, far away from the cleaning plate, of each fixing clamping block, a limiting groove corresponding to a limiting block is arranged on the inner wall of the blackboard, supporting rods are respectively and fixedly connected to the periphery of the bottom of the base, and brake blocks are rotatably connected to. The invention overcomes the defects of the prior art, has reasonable design, realizes the movement and the fixation of the terminal, realizes the synchronous use of the display screen and the blackboard, is convenient for cleaning and wiping, and has higher social use value and application prospect.
Description
Technical Field
The invention relates to the technical field of online education, in particular to an artificial intelligence online education mobile terminal.
Background
With the rapid development of information technology, particularly from the internet to the mobile internet, a cross-time-space life, work and learning mode is created, a knowledge acquisition mode is fundamentally changed, teaching and learning can not be limited by time, space and place conditions, knowledge acquisition channels are flexible and diversified, online education shows more and more advantages, online education is a method for carrying out course content transmission and sharing and rapid learning by applying information technology and internet technology, a network is used as a medium, and a user and a teacher can develop teaching activities even if the user and the teacher are separated by ten thousand miles.
At present, most of online education terminals are large in size, fixed and inconvenient to move and use; most of the terminals only have the function of a display screen, but lack a terminal device with a blackboard and a display screen integrated.
Therefore, the inventor provides an artificial intelligent online education mobile terminal with the experience of design development and actual manufacturing abundant in the related industry for years, and researches and improves the existing structure and deficiency, so as to achieve the purpose of more practical value.
Disclosure of Invention
In order to solve the problems mentioned in the background art, the present invention provides an artificial intelligence online education mobile terminal.
In order to achieve the purpose, the invention adopts the following technical scheme:
an artificial intelligence online education mobile terminal comprises a base and a terminal body shell, wherein the terminal body shell is fixed at the upper end of the base, a display screen is arranged on one side of the outer wall of the terminal body shell, a blackboard is arranged below the display screen, a cleaning plate is arranged on one side of the outer wall of the blackboard, a cleaning brush is arranged on one side of the cleaning plate close to the blackboard, fixed clamping blocks are respectively arranged at two ends of the cleaning plate, a telescopic part is fixedly connected to one end, away from the cleaning plate, of each fixed clamping block, a limiting block is arranged at one end, away from the fixed clamping blocks, of each telescopic part, each limiting block extends towards the inner wall of the blackboard, a limiting groove corresponding to each limiting block is arranged on the inner wall of the blackboard, supporting rods are respectively and fixedly connected around the bottom of the base, pulleys are rotatably connected to the bottom of each supporting rod, a brake block, the upper end of brake block is equipped with the movable rod through spacing spout, and the movable rod runs through the base and upwards extends the end and be equipped with the second handle, the fixed annular fixture block that has cup jointed of upper end outer wall of movable rod, and the outer wall of annular fixture block has cup jointed and has rotated the cover, upper end one side fixedly connected with lug of base, and the bottom one side of rotating the cover is equipped with the joint groove that corresponds with the lug.
Preferably, the telescopic part consists of a telescopic rod and a spring, and the spring is sleeved on the outer wall of the telescopic rod.
Preferably, the bottom bilateral symmetry of stopper is equipped with the fixture block, and the inner wall of spacing groove is equipped with the draw-in groove that corresponds with the fixture block.
Preferably, a first handle is arranged in the middle of the outer wall of the cleaning plate.
Preferably, the movable rod is symmetrically provided with limiting sliding blocks at two sides of the extending end of the limiting sliding groove, and the inner wall of the limiting sliding groove is provided with a sliding groove corresponding to the limiting sliding blocks.
Preferably, the two sides of the outer wall of the terminal body shell are symmetrically provided with speakers.
Compared with the prior art, the invention has the beneficial effects that:
1. the movable rod is pulled upwards to separate the brake block from the pulley, the rotating sleeve is rotated, the clamping groove at the bottom of the rotating sleeve is clamped on the outer wall of the upper end of the bump, the rotating sleeve is fixed, and the terminal body shell is moved to a specified position;
2. the rotating sleeve is loosened, and the brake block is tightly attached to the pulley under the action of the resilience force of the elastic part, so that the pulley is fixed;
3. carry out the show of courseware through the display screen, and through the effect of the key teaching content of blackboard record or the proposition problem, press the first in command and carry out the horizontal slip, first in command drives the cleaning plate horizontal slip for clean the cleaning brush and clean the blackboard, thereby make its function more, the practicality is stronger.
In conclusion, the invention overcomes the defects of the prior art, has reasonable design, realizes the movement and the fixation of the terminal, realizes the synchronous use of the display screen and the blackboard, is convenient for cleaning and wiping, and has higher social use value and application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the installation structure of the cleaning plate of the present invention;
FIG. 3 is an enlarged view of the structure A of the present invention;
FIG. 4 is an enlarged view of the structure of the present invention B.
In the figure: the blackboard cleaning machine comprises a base 1, a terminal body shell 2, a display screen 3, a blackboard 4, a cleaning plate 5, a fixed clamping block 6, a limiting groove 7, a cleaning brush 8, a first handle 9, a telescopic component 10, a limiting block 11, a clamping block 12, a supporting rod 13, a pulley 14, a brake block 15, an elastic component 16, a movable rod 17, a second handle 18, a limiting sliding block 19, a limiting sliding groove 20, a convex block 21, a rotating sleeve 22, a clamping groove 23, an annular clamping block 24 and a loudspeaker 25.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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. 1-4, an artificial intelligence online education mobile terminal comprises a base 1 and a terminal body housing 2, the terminal body housing 2 is fixed on the upper end of the base 1, a display screen 3 is arranged on one side of the outer wall of the terminal body housing 2, a blackboard 4 is arranged below the display screen 3, a cleaning plate 5 is arranged on one side of the outer wall of the blackboard 4, a cleaning brush 8 is arranged on one side of the cleaning plate 5 close to the blackboard 4, fixed clamping blocks 6 are respectively arranged at two ends of the cleaning plate 5, a telescopic part 10 is fixedly connected to one end of each fixed clamping block 6 far away from the cleaning plate 5, a limiting block 11 is arranged at one end of each telescopic part 10 far away from the fixed clamping block 6, the limiting block 11 extends towards the inner wall of the blackboard 4, a limiting groove 7 corresponding to the limiting block 11 is arranged on the inner wall of the blackboard 4, supporting rods 13 are respectively fixedly connected, the outer wall of branch 13 rotates and is connected with brake block 15, be connected with elastic component 16 between brake block 15 and the branch 13, brake block 15's upper end is equipped with movable rod 17 through spacing spout 20, and movable rod 17 runs through base 1 and upwards extends the end and be equipped with second handle 18, the fixed annular fixture block 24 that has cup jointed of upper end outer wall of movable rod 17, and the outer wall of annular fixture block 24 has cup jointed and has rotated cover 22, upper end one side fixedly connected with lug 21 of base 1, and the bottom one side of rotating cover 22 is equipped with the joint groove 23 that corresponds with lug 21.
Wherein, flexible part 10 comprises telescopic link and spring, and the spring cup joints in the outer wall of telescopic link, plays shock attenuation buffering effect through setting up flexible part 10.
Wherein, the bottom bilateral symmetry of stopper 11 is equipped with fixture block 12, and the inner wall of spacing groove 7 is equipped with the draw-in groove that corresponds with fixture block 12, carries on spacingly to fixture block 12 through the draw-in groove to make stopper 11 steadily slide in spacing groove 7.
Wherein, the middle part of the outer wall of the cleaning plate 5 is provided with a first handle 9, and the cleaning plate 5 is horizontally slid through the first handle 9, so that the cleaning brush 8 cleans the blackboard 4.
Wherein, the bilateral symmetry that movable rod 17 extended the end to spacing spout 20 in is equipped with limiting slide 19, and limiting slide 20's inner wall is equipped with the sliding tray that corresponds with limiting slide 19, carries on spacingly to limiting slide 19 through setting up the sliding tray to make movable rod 17 slide in limiting slide 20.
Wherein, the outer wall both sides symmetry of terminal body shell 2 are equipped with speaker 25, make the content of broadcast on the display screen 3 can output sound through setting up speaker 25.
The working principle is as follows: when the terminal body shell 2 is used, the movable rod 17 is pulled upwards through the second handle 18, so that the brake block 15 is separated from the pulley 14, the rotating sleeve 22 is rotated, the clamping groove 23 at the bottom of the rotating sleeve 22 is clamped on the outer wall of the upper end of the convex block 21, the rotating sleeve 22 is fixed, and the terminal body shell 2 is moved to a specified position; at this time, the rotating sleeve 22 is released, and the brake block 15 is tightly attached to the pulley 14 under the resilience of the elastic member 16, so that the pulley 14 is fixed; and carry out the show of courseware through display screen 3, and through the effect of 4 record key teaching contents of blackboard or proposition problem, because be connected with flexible part 10 between fixed fixture block 6 and the stopper 11, and flexible part 10 comprises telescopic link and spring, and the spring cup joints in the outer wall of telescopic link, play shock attenuation buffering effect through setting up flexible part 10, press the first in command 9 and carry out the horizontal slip, the first in command 9 drives 5 horizontal slips of cleaning plate, make cleaning brush 8 clean the cleaning to blackboard 4, thereby make its function more, the practicality is stronger.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides an artificial intelligence's online education mobile terminal, includes base (1) and terminal body shell (2), terminal body shell (2) are fixed in the upper end of base (1), its characterized in that: the blackboard cleaning machine is characterized in that a display screen (3) is arranged on one side of the outer wall of the terminal body shell (2), a blackboard (4) is arranged below the display screen (3), a cleaning plate (5) is arranged on one side of the outer wall of the blackboard (4), a cleaning brush (8) is arranged on one side, close to the blackboard (4), of the cleaning plate (5), fixed clamping blocks (6) are respectively arranged at two ends of the cleaning plate (5), a telescopic part (10) is fixedly connected to one end, far away from the cleaning plate (5), of each fixed clamping block (6), a limiting block (11) is arranged at one end, far away from the corresponding fixed clamping block (6), of each telescopic part (10), each limiting block (11) extends towards the inner wall of the blackboard (4), a limiting groove (7) corresponding to each limiting block (11) is arranged on the inner wall of the blackboard (4), supporting rods (13) are respectively and fixedly connected to the periphery of the bottom, the outer wall of branch (13) rotates and is connected with brake block (15), be connected with elastic component (16) between brake block (15) and branch (13), the upper end of brake block (15) is equipped with movable rod (17) through spacing spout (20), and movable rod (17) run through base (1) and upwards extend the end and be equipped with second handle (18), annular fixture block (24) have been cup jointed to the upper end outer wall of movable rod (17) is fixed, and the outer wall of annular fixture block (24) has cup jointed and has rotated cover (22), upper end one side fixedly connected with lug (21) of base (1), and the bottom one side of rotating cover (22) is equipped with joint groove (23) that correspond with lug (21).
2. The artificial intelligence online education mobile terminal according to claim 1, wherein: the telescopic part (10) consists of a telescopic rod and a spring, and the spring is sleeved on the outer wall of the telescopic rod.
3. The artificial intelligence online education mobile terminal according to claim 1, wherein: the bottom bilateral symmetry of stopper (11) is equipped with fixture block (12), and the inner wall of spacing groove (7) is equipped with the draw-in groove that corresponds with fixture block (12).
4. The artificial intelligence online education mobile terminal according to claim 1, wherein: the middle part of the outer wall of the cleaning plate (5) is provided with a first handle (9).
5. The artificial intelligence online education mobile terminal according to claim 1, wherein: the movable rod (17) is provided with limiting sliding blocks (19) symmetrically at two sides of the extending end of the limiting sliding groove (20), and the inner wall of the limiting sliding groove (20) is provided with a sliding groove corresponding to the limiting sliding blocks (19).
6. The artificial intelligence online education mobile terminal according to claim 1, wherein: the two sides of the outer wall of the terminal body shell (2) are symmetrically provided with loudspeakers (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065828.0A CN111260972A (en) | 2020-01-20 | 2020-01-20 | Artificial intelligence's online education mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065828.0A CN111260972A (en) | 2020-01-20 | 2020-01-20 | Artificial intelligence's online education mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111260972A true CN111260972A (en) | 2020-06-09 |
Family
ID=70950908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010065828.0A Withdrawn CN111260972A (en) | 2020-01-20 | 2020-01-20 | Artificial intelligence's online education mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111260972A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594570A (en) * | 2020-06-16 | 2020-08-28 | 上海可蓝信息科技有限公司 | Information technology multimedia rapid display device |
| CN112268178A (en) * | 2020-10-23 | 2021-01-26 | 苏州骐越信息科技有限公司 | Information consultation service system based on big data analysis and collection |
| CN113030423A (en) * | 2021-04-05 | 2021-06-25 | 井冈山大学 | Civil construction engineering on-site reinforcing steel bar detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201824720U (en) * | 2010-10-28 | 2011-05-11 | 赵起超 | Blackboard convenient to clean |
| CN205439693U (en) * | 2016-03-01 | 2016-08-10 | 王春堂 | Blackboard is used in education |
| CN207039034U (en) * | 2017-07-31 | 2018-02-23 | 衢州市金鹏电器有限公司 | A kind of vacuum circuit breaker overhaul scaffold |
| CN207330289U (en) * | 2017-10-31 | 2018-05-08 | 华电郑州机械设计研究院有限公司 | A kind of packaged type coal mine hydraulic supporting maintenance platform |
| CN108016175A (en) * | 2016-10-30 | 2018-05-11 | 上杭县鑫驰汽车修配厂 | The blackboard eraser of quick wipe |
| CN208384829U (en) * | 2018-03-03 | 2019-01-15 | 张红卫 | A kind of children English teaching Multipurpose templet |
-
2020
- 2020-01-20 CN CN202010065828.0A patent/CN111260972A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201824720U (en) * | 2010-10-28 | 2011-05-11 | 赵起超 | Blackboard convenient to clean |
| CN205439693U (en) * | 2016-03-01 | 2016-08-10 | 王春堂 | Blackboard is used in education |
| CN108016175A (en) * | 2016-10-30 | 2018-05-11 | 上杭县鑫驰汽车修配厂 | The blackboard eraser of quick wipe |
| CN207039034U (en) * | 2017-07-31 | 2018-02-23 | 衢州市金鹏电器有限公司 | A kind of vacuum circuit breaker overhaul scaffold |
| CN207330289U (en) * | 2017-10-31 | 2018-05-08 | 华电郑州机械设计研究院有限公司 | A kind of packaged type coal mine hydraulic supporting maintenance platform |
| CN208384829U (en) * | 2018-03-03 | 2019-01-15 | 张红卫 | A kind of children English teaching Multipurpose templet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594570A (en) * | 2020-06-16 | 2020-08-28 | 上海可蓝信息科技有限公司 | Information technology multimedia rapid display device |
| CN112268178A (en) * | 2020-10-23 | 2021-01-26 | 苏州骐越信息科技有限公司 | Information consultation service system based on big data analysis and collection |
| CN113030423A (en) * | 2021-04-05 | 2021-06-25 | 井冈山大学 | Civil construction engineering on-site reinforcing steel bar detector |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200609 |
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| WW01 | Invention patent application withdrawn after publication |