CN113197428A - Anti-cheating desk for higher education - Google Patents
Anti-cheating desk for higher education Download PDFInfo
- Publication number
- CN113197428A CN113197428A CN202110458390.7A CN202110458390A CN113197428A CN 113197428 A CN113197428 A CN 113197428A CN 202110458390 A CN202110458390 A CN 202110458390A CN 113197428 A CN113197428 A CN 113197428A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- desk
- mounting groove
- plate
- negative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B41/00—School desks or tables
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
Abstract
The invention relates to the technical field of education, and discloses an anti-cheating desk for higher education, which comprises a desk panel, and further comprises a mounting groove, a movable baffle, dimming glass, a limiting mechanism and an electric control mechanism, wherein the mounting groove is formed in the desk panel, the movable baffle is movably connected in the mounting groove, the dimming glass is fixedly connected in the mounting groove, the limiting mechanism is fixedly connected in the desk panel, and the electric control mechanism is fixedly connected in the desk panel. Negative pole stick electric connection is to positive conducting rod, through positive conducting rod and negative conducting rod switch-on circuit for dimming glass circular telegram becomes transparent state, and the desk side is transparent glass structure this moment, and invigilator can the inside article of direct observation desk, neither influences examinee's normal use desk, and convenient invigilator observes examinee's trend simultaneously, and adjustable fender is located desk panel top, can obstruct other examinee's sight when the examination, prevents to cheat.
Description
Technical Field
The invention relates to the technical field of education, in particular to an anti-cheating desk for higher education.
Background
In the student age, a desk is a necessary learning tool for people, generally, the desk is simple and comprises a desktop, a drawer and desk legs, and plays a role of placing a schoolbag and a writing desk, but with the aggravation of a study and examination task, schools find that in daily tests and examinations, part of students often turn over books or notebooks from the desk for cheating, and the adverse phenomenon influences the learning quality and attitude of the students to a certain extent.
In an examination, particularly in some classrooms with small positions, desks are arranged relatively close to each other, books in drawers are easy to steal, students can cheat in the examination by stealing test papers of other people, the existing desks cannot effectively prevent the cheating behaviors, in addition, along with popularization of smart phones, more and more students can carry the smart devices in schools, and since the drawers below the desks are spacious zones, examinees can cheat easily by means of the smart devices, and therefore the cheating-prevention desk for higher education is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the anti-cheating desk for higher education, which has the advantages of convenience in use, privacy and openness and solves the problems that the existing desk is simple in structure and can not prevent cheating of students.
(II) technical scheme
In order to realize the purposes of convenient use, privacy and public, the invention provides the following technical scheme: the utility model provides an education is with preventing desk that cheats, includes the desk panel, and the board is faced as the left and right sides of the desk body of normal use to the desk panel, still includes mounting groove, adjustable fender, dimming glass, stop gear, electrical control mechanism, the mounting groove has been seted up to desk panel inside, the inside swing joint of mounting groove has adjustable fender, the inside fixedly connected with dimming glass of mounting groove, the inside fixedly connected with stop gear of desk panel, the inside fixedly connected with electrical control mechanism of desk panel.
Furthermore, the outer side of the dimming glass is fixedly connected with a positive conducting rod, the outer side of the dimming glass is fixedly connected with a negative conducting rod, and a circuit is connected through the positive conducting rod and the negative conducting rod.
Furthermore, stop gear includes movable block, spacing groove, magnetostrictive shaft, electro-magnet, positive plate, negative plate, piezo-resistor, dielectric plate, the inside swing joint of mounting groove has the movable block, the inboard fixed connection of movable block is in the adjustable fender outside, the spacing groove has been seted up to the movable block inside, the inside fixedly connected with magnetostrictive shaft of mounting groove, the inside fixedly connected with electro-magnet of desk panel, the inside fixedly connected with positive plate of desk panel, the inside fixedly connected with negative plate of desk panel, the inside fixedly connected with piezo-resistor of desk panel, the inside fixedly connected with dielectric plate of adjustable fender.
Further, the cross-sectional area of the dielectric plate is larger than the cross-sectional areas of the positive plate and the negative plate, the negative plate is electrically connected to the piezoresistor, the dielectric plate controls the size of the circuit voltage passing through the negative plate, when the relative area between the positive plate and the negative plate is the largest, the working voltage of the piezoresistor is not reached, and the piezoresistor is in an open circuit state at the moment.
Furthermore, the piezoresistor is electrically connected to the electromagnet, the magnetostrictive shaft is located inside a magnetic field environment around the electromagnet, and the dielectric plate changes the relative area between the positive plate and the negative plate, so that after the voltage at the two ends of the negative plate reaches the working voltage of the piezoresistor, the electromagnet is electrified to have magnetism, and the magnetostrictive shaft is extended.
Further, electrically controlled mechanism includes solution chamber, electrolyte, connection fulcrum shaft, anodal stick, negative pole stick, the inside fixedly connected with solution chamber of mounting groove, the solution intracavity portion is filled with electrolyte, adjustable fender bottom fixedly connected with connection fulcrum shaft, connection fulcrum shaft bottom fixedly connected with anodal stick, connection fulcrum shaft bottom fixedly connected with negative pole stick.
Further, the positive pole rod is made of lead dioxide, the negative pole plate is made of metal lead materials, the electrolyte is dilute sulfuric acid solution, and the positive pole rod and the negative pole rod are inserted into the electrolyte to form a storage battery to start discharging.
Furthermore, the negative pole stick electric connection is to positive conducting rod for light control glass circular telegram becomes transparent state, negative pole stick electric connection is to the electro-magnet, makes the electro-magnet circular telegram have magnetism.
(III) advantageous effects
Compared with the prior art, the invention provides an anti-cheating desk for higher education, which has the following beneficial effects:
1. this desk of preventing practising fraud is used in higher education, upwards pull out adjustable fender along the mounting groove, the movable block removes along the mounting groove, thereby drive anodal stick and negative pole stick and insert solution intracavity portion, it begins to discharge to form the battery, the dielectric plate removes along with adjustable fender this moment, reach piezo-resistor's operating voltage after, make the electromagnetism circular telegram have magnetism, thereby make the extension of magnetostrictive shaft insert the spacing groove, fix the movable block together with adjustable fender, adjustable fender is located desk panel top this moment, lie in desk body both sides top promptly, can obstruct other examinee's sight when the examination, prevent practising fraud.
2. This education such as higher education is with preventing desk that cheats, negative pole stick electric connection are to positive conducting rod, through positive conducting rod and negative conducting rod switch-on circuit for dimming glass circular telegram becomes transparent state, and the desk side is transparent glass structure this moment, and prisoner can direct observation to the inside article of desk, neither influences the examinee and normally uses the desk, makes things convenient for the prisoner to observe the examinee move to simultaneously, prevents that the examinee from initiatively cheating.
Drawings
FIG. 1 is a schematic side view of an electromagnet according to the present invention in an unenergized state;
FIG. 2 is a schematic diagram of a side view of an electromagnet according to the present invention in an energized state;
FIG. 3 is a schematic side view of a flapper of the present invention;
FIG. 4 is a top view of the desk panel of the present invention.
In the figure: 1. a desk panel; 2. mounting grooves; 3. a movable baffle; 4. a light control glass; 5. a limiting mechanism; 51. a moving block; 52. a limiting groove; 53. an electromagnet; 54. a positive plate; 55. a negative plate; 56. a voltage dependent resistor; 57. a dielectric plate; 58. a magnetostrictive shaft; 6. an electric control mechanism; 61. a solution chamber; 62. an electrolyte; 63. connecting a fulcrum; 64. a positive electrode bar; 65. a negative electrode bar; 7. a positive conductive rod; 8. a negative conductive rod.
Detailed Description
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.
The first embodiment is as follows:
referring to fig. 1-4, an anti-cheating desk for higher education comprises a desk panel 1, wherein the desk panel 1 serves as left and right side panels of a desk body which is normally used, and further comprises a mounting groove 2, a movable baffle 3, dimming glass 4, a limiting mechanism 5 and an electric control mechanism 6, the mounting groove 2 is formed in the desk panel 1, the movable baffle 3 is movably connected in the mounting groove 2, the dimming glass 4 is fixedly connected in the mounting groove 2, the limiting mechanism 5 is fixedly connected in the desk panel 1, the electric control mechanism 6 is fixedly connected in the desk panel 1, a positive conducting rod 7 is fixedly connected to the outer side of the dimming glass 4, a negative conducting rod 8 is fixedly connected to the outer side of the dimming glass 4, and a circuit is connected through the positive conducting rod 7 and the negative conducting;
the limiting mechanism 5 comprises a moving block 51, a limiting groove 52, a magnetostrictive shaft 58, an electromagnet 53, a positive plate 54, a negative plate 55, a piezoresistor 56 and a dielectric plate 57, the inside of the mounting groove 2 is movably connected with the moving block 51, the inner side of the moving block 51 is fixedly connected to the outer side of the movable baffle plate 3, the inside of the moving block 51 is provided with the limiting groove 52, the inside of the mounting groove 2 is fixedly connected with the magnetostrictive shaft 58, the inside of the desk panel 1 is fixedly connected with the electromagnet 53, the inside of the desk panel 1 is fixedly connected with the positive plate 54, the inside of the desk panel 1 is fixedly connected with the negative plate 55, the inside of the desk panel 1 is fixedly connected with the piezoresistor 56, the inside of the movable baffle plate 3 is fixedly connected with the dielectric plate 57, the sectional area of the dielectric plate 57 is larger than the sectional areas of the positive plate 54 and the negative plate 55, and when the relative area between the positive plate 54 and the negative plate 55 is the largest, the working voltage of the piezoresistor 56 is not reached, at this time, the piezoresistor 56 is in an off state, the negative plate 55 is electrically connected to the piezoresistor 56, the dielectric plate 57 controls the magnitude of the circuit voltage passing through the negative plate 55, the piezoresistor 56 is electrically connected to the electromagnet 53, the magnetostrictive shaft 58 is located in the magnetic field environment around the electromagnet 53, and the dielectric plate 57 changes the relative area between the positive plate 54 and the negative plate 55, so that after the voltage passing through the two ends of the negative plate 55 reaches the operating voltage of the piezoresistor 56, the electromagnet 53 is energized to have magnetism, and the magnetostrictive shaft 58 is extended.
Example two:
referring to fig. 1-4, an anti-cheating desk for higher education comprises a desk panel 1, wherein the desk panel 1 serves as left and right side panels of a desk body which is normally used, and further comprises a mounting groove 2, a movable baffle 3, dimming glass 4, a limiting mechanism 5 and an electric control mechanism 6, the mounting groove 2 is formed in the desk panel 1, the movable baffle 3 is movably connected in the mounting groove 2, the dimming glass 4 is fixedly connected in the mounting groove 2, the limiting mechanism 5 is fixedly connected in the desk panel 1, the electric control mechanism 6 is fixedly connected in the desk panel 1, a positive conducting rod 7 is fixedly connected to the outer side of the dimming glass 4, a negative conducting rod 8 is fixedly connected to the outer side of the dimming glass 4, and a circuit is connected through the positive conducting rod 7 and the negative conducting rod 8;
the limiting mechanism 5 comprises a moving block 51, a limiting groove 52, a magnetostrictive shaft 58, an electromagnet 53, a positive plate 54, a negative plate 55, a piezoresistor 56 and a dielectric plate 57, the inside of the mounting groove 2 is movably connected with the moving block 51, the inner side of the moving block 51 is fixedly connected to the outer side of the movable baffle plate 3, the inside of the moving block 51 is provided with the limiting groove 52, the inside of the mounting groove 2 is fixedly connected with the magnetostrictive shaft 58, the inside of the desk panel 1 is fixedly connected with the electromagnet 53, the inside of the desk panel 1 is fixedly connected with the positive plate 54, the inside of the desk panel 1 is fixedly connected with the negative plate 55, the inside of the desk panel 1 is fixedly connected with the piezoresistor 56, the inside of the movable baffle plate 3 is fixedly connected with the dielectric plate 57, the sectional area of the dielectric plate 57 is larger than the sectional areas of the positive plate 54 and the negative plate 55, and when the relative area between the positive plate 54 and the negative plate 55 is the largest, the working voltage of the piezoresistor 56 is not reached, at this time, the piezoresistor 56 is in an off state, the negative plate 55 is electrically connected to the piezoresistor 56, the dielectric plate 57 controls the magnitude of the circuit voltage passing through the negative plate 55, the piezoresistor 56 is electrically connected to the electromagnet 53, the magnetostrictive shaft 58 is located in the magnetic field environment around the electromagnet 53, and the dielectric plate 57 changes the relative area between the positive plate 54 and the negative plate 55, so that after the voltage passing through the two ends of the negative plate 55 reaches the working voltage of the piezoresistor 56, the electromagnet 53 is electrified to have magnetism, and the magnetostrictive shaft 58 is extended;
electrically controlled mechanism 6 includes solution chamber 61, electrolyte 62, connect fulcrum 63, positive pole stick 64, negative pole stick 65, the inside fixedly connected with solution chamber 61 of mounting groove 2, the inside packing of solution chamber 61 has electrolyte 62, 3 bottom fixedly connected with of adjustable fender connects fulcrum 63, connect fulcrum 63 bottom fixedly connected with positive pole stick 64, connect fulcrum 63 bottom fixedly connected with negative pole stick 65, positive pole stick 64 adopts lead dioxide to make, negative plate 55 adopts the plumbous material to make, electrolyte 62 adopts dilute sulfuric acid solution, positive pole stick 64 and negative pole stick 65 insert and form the battery behind the electrolyte 62 inside and begin to discharge, negative pole stick 65 electric connection is to positive conducting rod 7, make dimming glass 4 circular telegram become transparent state, negative pole stick 65 electric connection is to electro-magnet 53, make electro-magnet 53 circular telegram have magnetism.
The working principle is as follows: when the desk is normally used, the movable baffle 3 is positioned in the mounting groove 2, when an examination is required, the movable baffle 3 is pulled out upwards along the mounting groove 2, the moving block 51 moves along the mounting groove 2, the connecting fulcrum shaft 63 is driven to move upwards in the moving process of the movable baffle 3, so that the positive rod 64 and the negative rod 65 are driven to be inserted into the solution cavity 61, the positive rod 64 and the negative rod 65 are inserted into the electrolyte 62 to form a storage battery to start discharging, the dielectric plate 57 moves along with the movable baffle 3, the dielectric plate 57 is inserted between the positive plate 54 and the negative plate 55, the relative area between the positive plate 54 and the negative plate 55 is changed, after the voltage at the two ends of the negative plate 55 reaches the working voltage of the piezoresistor 56, the negative rod 65 is electrically connected to the electromagnet 53, so that the electromagnet 53 is electrified to have magnetism, therefore, the magnetostrictive shaft 58 is inserted into the limiting groove 52 in an extending way, the moving block 51 and the movable baffle 3 are fixed, and the movable baffle 3 is positioned at the top of the desk panel 1, namely above two sides of the desk body, so that the visual lines of other examinees can be blocked during examination, and cheating is prevented;
simultaneously negative-pole stick 65 electric connection is to positive conducting rod 7, through positive conducting rod 7 and 8 switch-on circuits of negative conducting rod for 4 circular telegrams of adjusting luminance become transparent state, and the desk side is transparent glass structure this moment, and invigilator can direct observation to the inside article of desk, neither influences examinee normal use desk, makes things convenient for invigilator to observe the examinee to move to simultaneously, prevents that the examinee from initiatively cheating.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an advanced education is with preventing desk that cheats, includes desk panel (1), its characterized in that: still include mounting groove (2), adjustable baffle (3), dimming glass (4), stop gear (5), electrical control mechanism (6), mounting groove (2) have been seted up to desk panel (1) inside, the inside swing joint of mounting groove (2) has adjustable baffle (3), the inside fixedly connected with dimming glass (4) of mounting groove (2), the inside fixedly connected with stop gear (5) of desk panel (1), the inside fixedly connected with electrical control mechanism (6) of desk panel (1).
2. The anti-cheating desk for higher education according to claim 1, wherein: the outer side of the light adjusting glass (4) is fixedly connected with a positive conducting rod (7), and the outer side of the light adjusting glass (4) is fixedly connected with a negative conducting rod (8).
3. The anti-cheating desk for higher education according to claim 1, wherein: the limiting mechanism (5) comprises a moving block (51), a limiting groove (52), a magnetostrictive shaft (58), an electromagnet (53), a positive plate (54), a negative plate (55), a piezoresistor (56) and a dielectric plate (57), a moving block (51) is movably connected in the mounting groove (2), the inner side of the moving block (51) is fixedly connected to the outer side of the movable baffle plate (3), a limit groove (52) is arranged in the moving block (51), a magnetostrictive shaft (58) is fixedly connected in the mounting groove (2), the inner part of the desk panel (1) is fixedly connected with an electromagnet (53), the inner part of the desk panel (1) is fixedly connected with a positive plate (54), a negative plate (55) is fixedly connected inside the desk panel (1), a piezoresistor (56) is fixedly connected inside the desk panel (1), a dielectric plate (57) is fixedly connected inside the movable baffle (3).
4. The anti-cheating desk for higher education according to claim 1, wherein: the dielectric plate (57) has a cross-sectional area greater than the cross-sectional areas of the positive plate (54) and the negative plate (55), and the negative plate (55) is electrically connected to the varistor (56).
5. The anti-cheating desk for higher education according to claim 1, wherein: the piezoresistor (56) is electrically connected to the electromagnet (53), and the magnetostrictive shaft (58) is positioned in the magnetic field environment around the electromagnet (53).
6. The anti-cheating desk for higher education according to claim 1, wherein: electrically controlled mechanism (6) include solution chamber (61), electrolyte (62), connect fulcrum shaft (63), positive pole stick (64), negative pole stick (65), the inside fixedly connected with solution chamber (61) of mounting groove (2), solution chamber (61) inside packing has electrolyte (62), adjustable fender (3) bottom fixedly connected with connects fulcrum shaft (63), connect fulcrum shaft (63) bottom fixedly connected with positive pole stick (64), connect fulcrum shaft (63) bottom fixedly connected with negative pole stick (65).
7. The anti-cheating desk for higher education according to claim 1, wherein: the anode rod (64) is made of lead dioxide, the cathode plate (55) is made of metal lead materials, and the electrolyte (62) is a dilute sulfuric acid solution.
8. The anti-cheating desk for higher education according to claim 1, wherein: the negative electrode rod (65) is electrically connected to the positive conductive rod (7), and the negative electrode rod (65) is electrically connected to the electromagnet (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458390.7A CN113197428B (en) | 2021-04-27 | 2021-04-27 | Anti-cheating desk for higher education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458390.7A CN113197428B (en) | 2021-04-27 | 2021-04-27 | Anti-cheating desk for higher education |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113197428A true CN113197428A (en) | 2021-08-03 |
| CN113197428B CN113197428B (en) | 2022-03-25 |
Family
ID=77028884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110458390.7A Active CN113197428B (en) | 2021-04-27 | 2021-04-27 | Anti-cheating desk for higher education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113197428B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213067U (en) * | 1987-08-31 | 1988-08-24 | 邹俭涛 | Multifunctional table and chair for study |
| CA2017385A1 (en) * | 1989-08-10 | 1991-02-10 | Mark Krichever | Point-of-sale system including infinitely adjustable optical scanner |
| CN103501570A (en) * | 2013-10-28 | 2014-01-08 | 顾晓烨 | Portable intelligent emergency lighting device |
| CN203435923U (en) * | 2013-08-22 | 2014-02-19 | 杭州市上城区青少年科技辅导员协会 | Anti-cheating desk |
| CN105476277A (en) * | 2015-11-23 | 2016-04-13 | 左曙光 | Computer-based testing device |
| CN106419126A (en) * | 2016-10-31 | 2017-02-22 | 冀帆 | Multifunctional desk for student |
| CN107656916A (en) * | 2016-07-25 | 2018-02-02 | 长沙有干货网络技术有限公司 | A kind of anti-technical method of practising fraud of the magnanimity document of Simhash algorithms |
| CN109288259A (en) * | 2018-09-25 | 2019-02-01 | 浙江省嘉善县第中学 | A kind of anti-cheating desk of student examination |
| CN208590649U (en) * | 2017-10-25 | 2019-03-12 | 深圳市柔宇科技有限公司 | Desk |
| CN109748842A (en) * | 2011-12-23 | 2019-05-14 | 株式会社半导体能源研究所 | Ionic liquid, nonaqueous electrolyte and electrical storage device |
| CN211375908U (en) * | 2020-01-19 | 2020-08-28 | 南京胜林信息科技有限公司 | Auxiliary device of laboratory online examination system |
-
2021
- 2021-04-27 CN CN202110458390.7A patent/CN113197428B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213067U (en) * | 1987-08-31 | 1988-08-24 | 邹俭涛 | Multifunctional table and chair for study |
| CA2017385A1 (en) * | 1989-08-10 | 1991-02-10 | Mark Krichever | Point-of-sale system including infinitely adjustable optical scanner |
| CN109748842A (en) * | 2011-12-23 | 2019-05-14 | 株式会社半导体能源研究所 | Ionic liquid, nonaqueous electrolyte and electrical storage device |
| CN203435923U (en) * | 2013-08-22 | 2014-02-19 | 杭州市上城区青少年科技辅导员协会 | Anti-cheating desk |
| CN103501570A (en) * | 2013-10-28 | 2014-01-08 | 顾晓烨 | Portable intelligent emergency lighting device |
| CN105476277A (en) * | 2015-11-23 | 2016-04-13 | 左曙光 | Computer-based testing device |
| CN107656916A (en) * | 2016-07-25 | 2018-02-02 | 长沙有干货网络技术有限公司 | A kind of anti-technical method of practising fraud of the magnanimity document of Simhash algorithms |
| CN106419126A (en) * | 2016-10-31 | 2017-02-22 | 冀帆 | Multifunctional desk for student |
| CN208590649U (en) * | 2017-10-25 | 2019-03-12 | 深圳市柔宇科技有限公司 | Desk |
| CN109288259A (en) * | 2018-09-25 | 2019-02-01 | 浙江省嘉善县第中学 | A kind of anti-cheating desk of student examination |
| CN211375908U (en) * | 2020-01-19 | 2020-08-28 | 南京胜林信息科技有限公司 | Auxiliary device of laboratory online examination system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113197428B (en) | 2022-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207676538U (en) | A kind of Financial Economics teaching display board | |
| CN113197428B (en) | Anti-cheating desk for higher education | |
| CN207503476U (en) | A kind of think of political affairs teaching classroom Teaching instrument | |
| CN108843049A (en) | A kind of pupil movement can use sunshade | |
| CN206152241U (en) | Basketball stand device for physical education | |
| CN113543544B (en) | Pulse signal generator for integrated circuit test | |
| CN207694854U (en) | A kind of chemistry experiment platform | |
| CN209058321U (en) | A kind of elevating mechanism of practical traning platform | |
| CN211380071U (en) | Practical multimedia platform for teaching aid | |
| CN201829102U (en) | Teaching demonstrator for displaying charging and discharging patterns of capacitor | |
| CN207742807U (en) | Electricity teaching demonstration teaching aid | |
| CN204393723U (en) | Computer room double-purpose table | |
| CN209713602U (en) | It is a kind of to stare instrument visual chart for visual training | |
| CN209560793U (en) | A kind of Teaching on English Translation auxiliary device | |
| CN209514908U (en) | Lighting loop training and examination device | |
| CN213753575U (en) | Voltage transformer cabinet with anti-electric-shock function | |
| CN200990161Y (en) | Multiple-aspect self-induction phenomenon demonstration instrument | |
| CN219270406U (en) | Multifunctional interactive intelligent platform | |
| CN208580529U (en) | A kind of multi-faceted pole change demonstration teaching aid | |
| CN217181708U (en) | Science popularization experiment teaching display box of many accuses of circuit principle | |
| CN212009765U (en) | Face identification consumes all-in-one | |
| CN209103550U (en) | A kind of English word memory storage | |
| CN219738342U (en) | Musical education demonstrating board | |
| CN215577119U (en) | Electric automatization teaching analog control cabinet | |
| CN207574794U (en) | A kind of desk for teaching English with demonstration board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |