CN113270016A - Analytical equipment is used in teaching of economics specialty - Google Patents
Analytical equipment is used in teaching of economics specialty Download PDFInfo
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- CN113270016A CN113270016A CN202110617684.XA CN202110617684A CN113270016A CN 113270016 A CN113270016 A CN 113270016A CN 202110617684 A CN202110617684 A CN 202110617684A CN 113270016 A CN113270016 A CN 113270016A
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Abstract
The invention provides an analytical device for teaching of economics major, and relates to the field of teaching devices. This analytical equipment is used in teaching of economics specialty, including unable adjustment base, unable adjustment base up end fixed connection receiver, lift spout and spacing spout have been seted up on the inner wall of receiver both sides respectively, it is connected with the lift lead screw to rotate between the inner wall about the lift spout, the spacing slide bar of fixedly connected with between the inner wall about the spacing spout, the screw thread has cup jointed the lift slider on the lift lead screw outer wall, slide on the spacing slide bar outer wall and cup jointed spacing slider, the equal fixedly connected with connecting rod in the relative one side of lift slider and spacing slider. The analysis device for the economics major teaching provided by the invention is simple to operate and easy to move, can be used for vividly explaining a column diagram, a line diagram and a sector diagram, can also be used for explaining in real time, is convenient for students to deepen understanding, and improves the teaching efficiency.
Description
Technical Field
The invention relates to the field of teaching devices, in particular to an analytical device for teaching of economics major.
Background
The economics is a law for researching human economic activities, namely a law for creating, converting and realizing values, a lot of charts are used for economics teaching, students can conveniently analyze the economics by displaying the charts, at present, a traditional chart is that a teacher draws on a blackboard by hands or watches the charts for the students by using PPT, the former wastes time during drawing and affects teaching efficiency, and the latter requires the teacher to prepare lessons in advance and is not easy to change temporarily, so that the economic professional teaching analysis equipment is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an analytical device for teaching of economics major, and solves the problems of low teaching demonstration efficiency and poor teaching effect.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the analytical equipment for economics major teaching comprises a fixed base, wherein the upper end face of the fixed base is fixedly connected with a storage box, the inner walls of two sides of the storage box are respectively provided with a lifting chute and a limiting chute, a lifting screw rod is rotatably connected between the upper inner wall and the lower inner wall of the lifting chute, a limiting slide rod is fixedly connected between the upper inner wall and the lower inner wall of the limiting chute, the outer wall of the lifting screw rod is in threaded sleeve connection with a lifting slider, the outer wall of the limiting slide rod is in sliding sleeve connection with a limiting slider, one opposite side of the lifting slider and one opposite side of the limiting slider are both fixedly connected with connecting rods, a support is fixedly connected between the two connecting rods, a T-shaped groove is formed in the middle of the upper end face of the support, a T-shaped rotating shaft is rotatably connected in the T-shaped groove, and a display device is fixedly connected to the upper end face of the T-shaped rotating shaft;
the display device is characterized in that a plurality of display tubes are fixedly arranged on the front end face of the display device, spot lamps are arranged at the upper ends of the display tubes, gas ports are formed in the upper end faces of the display tubes, liquid return tubes are fixedly connected to the lower end faces of the display tubes, adjusting valves are fixedly arranged on the liquid return tubes, a first baffle is fixedly connected to one side of the front end face of the display device, a demonstration drawing board and a chalk box are fixedly arranged on one side wall of the display device respectively, the chalk box is arranged below the demonstration drawing board, a circular chart and a board placing box are fixedly arranged on one side of the display device far away from the demonstration drawing board, the board placing box is arranged below the circular chart, a plurality of clamping grooves are formed in the circular chart, a plurality of clamping boards are movably arranged on the front end face of the circular chart, a magnetic board and a board placing box are fixedly arranged on the rear end face of the display device, and the board placing box is arranged below the magnetic board, the magnetic plate is characterized in that a plurality of magnetic blocks are arranged on the outer wall of the magnetic plate, an elastic connecting rope is movably sleeved between every two adjacent magnetic blocks, a second laser lamp is arranged on one side of the magnetic plate in a sliding mode, a second adjusting knob is arranged at the lower end of the second laser lamp in a rotating mode, and a second baffle is fixedly arranged on the other side of the magnetic plate.
Preferably, the display device has seted up the inner cavity groove, the fixed a plurality of stock solutions boxes that are provided with of cavity inslot bottom, it is a plurality of the equal fixedly connected with catheter of stock solution box up end, it is a plurality of stock solution box one end is kept away from to the catheter fixed connection respectively is on a plurality of display tubes are close to the up end rear side pipe body, it is a plurality of all fixed micropumps that are provided with on the catheter.
Preferably, an adjusting chute and a bottom groove are respectively formed in the inner end of one side of the front end face of the display device, the bottom groove is arranged below the adjusting chute, a strip-shaped groove is formed in one side of the front end face of the display device, the adjusting chute is communicated with the strip-shaped groove, an adjusting screw rod is rotatably connected between the upper inner wall and the lower inner wall of the adjusting chute, an adjusting slider is sleeved on the outer wall of the adjusting screw rod in a threaded manner, a connecting piece is fixedly connected to the front end face of the adjusting slider, a first laser lamp is fixedly connected to the front end face of the connecting piece, the connecting piece is slidably arranged with the strip-shaped groove, a connecting column is rotatably arranged in the bottom groove, the upper end of the connecting column penetrates through the bottom groove and is fixedly connected with the adjusting screw rod, a driven gear is fixedly sleeved on the outer wall of the connecting column, a driving gear is arranged, the rear end of the first adjusting knob penetrates through the front end plate body of the display device and is fixedly connected with the driving gear.
Preferably, the connection mode of the second adjusting knob and the second laser lamp is the same as that of the first adjusting knob and the first laser lamp.
Preferably, the plurality of clamping plates and the plurality of clamping groove clamps are arranged, and the plurality of clamping grooves positioned at the circle center of the circular chart and on the circumference are arranged in a circular array by taking the circle center of the circular chart as a circular point.
Preferably, a plurality of the spot lamps are all fixedly arranged on the lower end face of the top plate on the front side of the display device.
Preferably, the upper end of the lifting screw rod penetrates through the storage box top plate body and is fixedly connected with a lifting adjusting motor.
Preferably, the lower end face of the fixed base is fixedly connected with self-locking universal wheels close to four corners.
The working principle is as follows: when the device is used, the lifting adjusting motor is utilized to drive the lifting lead screw to rotate to control the lifting slide block to move upwards, and finally the display device is driven to lift from the storage box and then to display on four sides as required, when a bar chart is required to be displayed, the stored fluorescent liquid is pumped by the small pump to enter the display tube, bar chart simulation is carried out according to the fluorescent liquid with different colors and the height in the display tube, and the liquid level in the display tube can be controlled according to the adjustment valve to achieve the purpose of adjustment, when a broken line chart is required to be displayed, the magnetic block is taken out from the storage box and the elastic connecting rope is sleeved on the magnetic block to simulate the lifting of lines, so as to achieve the simulated adjustment effect of the broken line chart, when the fan chart is required to be displayed, the clamping plate is inserted into the clamping groove, the size adjustment of different fan-shaped areas is carried out according to the requirement, so as to achieve the purpose of adjusting the fan chart, when the requirement is explained, one side of the demonstration drawing board is rotated to the front, and the chalk is taken out from the chalk box for drawing and explaining, so that the operation is simple and trouble-saving.
(III) advantageous effects
The invention provides an analysis device for teaching of economics major. The method has the following beneficial effects:
1. according to the analysis equipment for teaching of the economic major, provided by the invention, the device can perform visual explanation on common statistical charts such as a column chart, a line chart, a sector chart and the like to students through four sides of the display device, and is matched with the demonstration drawing board to perform supplementary explanation, so that the analysis equipment is more convenient for the students to understand, the demonstration device is vivid, the teaching process is interesting, and the attention concentration degree of the students can be effectively improved.
2. According to the analysis equipment for teaching of the economics major, the adjusting knob is arranged to drive the driving gear to rotate, further the driven gear is driven to rotate, further the connecting column is driven to rotate, further the adjusting screw rod is driven to rotate, further the adjusting slider is driven to move up and down, further the laser lamp fixedly connected through the connecting piece is driven to perform lifting adjustment, accordingly the function of pointing on the horizontal shaft is achieved, and comparison and adjustment of data are conveniently performed when a histogram or a broken line graph is explained.
3. According to the analysis equipment for teaching of the economics major, the storage box is used for storing the display device, the protection of the main body part of the device can be achieved, the damage of the device caused by accidents in the storage and transportation processes can be prevented, and the device can be conveniently moved by matching with the self-locking universal wheels.
Drawings
FIG. 1 is a schematic perspective view of the main structure of an analysis apparatus for economics teaching;
FIG. 2 is an internal view of a partial structure of an analysis apparatus for teaching major economics according to the present invention;
FIG. 3 is a schematic side sectional view of an internal structure of a hollow groove of the analysis device for teaching economics and profession provided by the present invention;
FIG. 4 is a schematic side sectional view of an internal structure of an analysis device for teaching major economics according to the present invention;
FIG. 5 is a right side view of a display device of an analysis apparatus for teaching major economics in accordance with the present invention;
FIG. 6 is a left side view of a display device of an analysis apparatus for teaching major economics in accordance with the present invention;
FIG. 7 is a rear view of a display device of the analysis apparatus for economics teaching professional in accordance with the present invention.
Wherein, 1, fixing the base; 2. a storage box; 3. a lifting chute; 4. a limiting chute; 5. a lifting screw rod; 6. a limiting slide bar; 7. a lifting slide block; 8. a limiting slide block; 9. a lift adjustment motor; 10. a connecting rod; 11. a support; 12. a T-shaped groove; 13. a T-shaped rotating shaft; 14. a display device; 15. a hollow groove; 16. a liquid storage box; 17. a catheter; 18. a small pump; 19. a display tube; 20. a liquid return pipe; 21. adjusting the valve; 22. a gas port; 23. sending light; 24. a first baffle plate; 25. adjusting the sliding chute; 26. a strip-shaped groove; 27. adjusting the screw rod; 28. adjusting the sliding block; 29. a connecting member; 30. a first laser light; 31. a bottom groove; 32. connecting columns; 33. a driven gear; 34. a driving gear; 35. a first adjustment knob; 36. a demonstration drawing board; 37. a chalk case; 38. a circular chart; 39. a card slot; 40. clamping a plate; 41. placing a plate box; 42. a second adjustment knob; 43. a second laser light; 44. a second baffle; 45. a magnetic plate; 46. a magnetic block; 47. an elastic connecting rope; 48. a storage box; 49. self-locking universal wheel.
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.
Example (b):
as shown in fig. 1 to 7, the embodiment of the invention provides an analytical device for economics major teaching, which includes a fixing base 1, wherein an upper end surface of the fixing base 1 is fixedly connected with a storage box 2, inner walls on two sides of the storage box 2 are respectively provided with a lifting chute 3 and a limiting chute 4, a lifting screw 5 is rotatably connected between upper and lower inner walls of the lifting chute 3, a limiting slide bar 6 is fixedly connected between upper and lower inner walls of the limiting chute 4, a lifting slide block 7 is sleeved on an outer wall of the lifting screw 5 through a thread, a limiting slide block 8 is sleeved on an outer wall of the limiting slide bar 6 in a sliding manner, connecting rods 10 are fixedly connected on opposite sides of the lifting slide block 7 and the limiting slide block 8, a support 11 is fixedly connected between the two connecting rods 10, a T-shaped groove 12 is formed in a middle part of an upper end surface of the support 11, a T-shaped rotating shaft 13 is rotatably connected in the T-shaped groove 12, and a display device 14 is fixedly connected on an upper end surface of the T-shaped rotating shaft 13.
The front end face of the display device 14 is fixedly provided with a plurality of display tubes 19, the upper ends of the display tubes 19 are provided with spot lamps 23, the upper end faces of the display tubes 19 are provided with air ports 22, due to the relationship of the air ports 22, the situation that the display tubes 19 are pressurized due to the fact that liquid is supplied into the display tubes 19 under the condition that the adjusting valves 21 are closed can not occur, the lower end faces of the display tubes 19 are fixedly connected with liquid return pipes 20, the adjusting valves 21 are fixedly arranged on the liquid return pipes 20, one side of the front end face of the display device 14 is fixedly connected with a first baffle plate 24, one side wall of the display device 14 is fixedly provided with a demonstration drawing board 36 and a chalk box 37, the chalk box 37 is arranged below the demonstration drawing board 36, one side of the display device 14 far away from the demonstration drawing board 36 is fixedly provided with a circular chart 38 and a board box 41, the board box 41 is arranged below the circular chart 38, and the circular chart 38 is provided with a plurality of clamping grooves 39, the movable a plurality of cardboard 40 that are provided with of terminal surface before circular chart 38, display device 14 rear end face is fixed to be provided with magnetic sheet 45 and puts the thing box 48, it sets up in magnetic sheet 45 below to put the thing box 48, be provided with a plurality of magnetic blocks 46 on the magnetic sheet 45 outer wall, the activity has cup jointed elastic connection rope 47 between two adjacent magnetic blocks 46, elastic connection rope 47 is the rope of cup jointing on magnetic block 46, magnetic sheet 45 slides on one side and is provided with second laser lamp 43, second laser lamp 43 lower extreme rotates and is provided with second adjust knob 42, the fixed second baffle 44 that is provided with of magnetic sheet 45 opposite side.
An adjusting chute 25 and a bottom groove 31 are respectively arranged at the inner end of one side of the front end face of the display device 14, the bottom groove 31 is arranged below the adjusting chute 25, a strip-shaped groove 26 is arranged at one side of the front end face of the display device 14, the adjusting chute 25 and the strip-shaped groove 26 are arranged in a penetrating way, an adjusting screw 27 is rotatably connected between the upper inner wall and the lower inner wall of the adjusting chute 25, an adjusting slider 28 is sleeved on the outer wall of the adjusting screw 27 through threads, a connecting piece 29 is fixedly connected to the front end face of the adjusting slider 28, a first laser lamp 30 is fixedly connected to the front end face of the connecting piece 29, a comparison effect can be performed by observing data on a light line and data under the light line, the connecting piece 29 and the strip-shaped groove 26 are rotatably and slidably arranged, a connecting column 32 is arranged in the bottom groove 31, the upper end of the connecting column 32 penetrates through the bottom groove 31 and is fixedly connected with the adjusting screw 27, and a driven gear 33 is fixedly sleeved on the outer wall of the connecting column 32, driven gear 33 one side is provided with driving gear 34, driven gear 33 sets up with driving gear 34 meshing, it is provided with first adjust knob 35 to rotate on the terminal surface is close to below one side outer wall before display device 14, first adjust knob 35 rear end runs through display device 14 front end plate body and with driving gear 34 fixed connection, rotate through first adjust knob 35, can drive driving gear 34 and rotate, and then drive driven gear 33 and rotate, and then drive spliced pole 32 and rotate, and then drive accommodate the lead screw 27 and rotate, and then drive accommodate the slider 28 and be the elevating movement, and then drive the first laser lamp 30 through connecting piece 29 fixed connection and carry out the lift adjustment motion.
The connection mode of the second adjusting knob 42 and the second laser lamp 43 and the connection mode of the first adjusting knob 35 and the first laser lamp 30 are the same, and the mode of driving the second laser lamp 43 through the second adjusting knob 42 is completely the same as the mode of driving the first laser lamp 30 through the first adjusting knob 35.
The plurality of clamping plates 40 and the plurality of clamping grooves 39 are clamped and arranged, the plurality of clamping grooves 39 which are positioned at the circle center of the circular chart 38 and on the circumference are arranged in a circular array by taking the circle center of the circular chart 38 as a circular point, and the clamping plates 40 are clamped in the clamping grooves 39 which correspond to the circle center and the circumference to complete the fixation of the clamping plates 40.
A plurality of shot-lights 23 all fix the setting on display device 14 front side roof lower extreme face, shine the fluorescence liquid through shot-light 23, make its demonstration more obvious.
The upper end of the lifting screw rod 5 penetrates through the top plate body of the storage box 2 and is fixedly connected with a lifting adjusting motor 9.
The lower end face of the fixed base 1 is close to the four corners and is fixedly connected with self-locking universal wheels 49, and the device is convenient to move.
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. Analytical equipment is used in teaching of economics specialty, including unable adjustment base (1), its characterized in that: the storage box (2) is fixedly connected to the upper end face of the fixed base (1), a lifting sliding groove (3) and a limiting sliding groove (4) are respectively formed in the inner walls of two sides of the storage box (2), a lifting lead screw (5) is rotatably connected between the upper inner wall and the lower inner wall of the lifting sliding groove (3), a limiting sliding rod (6) is fixedly connected between the upper inner wall and the lower inner wall of the limiting sliding groove (4), a lifting sliding block (7) is sleeved on the outer wall of the lifting lead screw (5) in a threaded manner, a limiting sliding block (8) is sleeved on the outer wall of the limiting sliding rod (6) in a sliding manner, connecting rods (10) are fixedly connected to opposite sides of the lifting sliding block (7) and the limiting sliding block (8), a support (11) is fixedly connected between the two connecting rods (10), a T-shaped groove (12) is formed in the middle of the upper end face of the support (11), and a T-shaped rotating shaft (13) is rotatably connected to the T-shaped groove (12), the upper end face of the T-shaped rotating shaft (13) is fixedly connected with a display device (14);
the display device is characterized in that a plurality of display tubes (19) are fixedly arranged on the front end face of the display device (14), the upper ends of the display tubes (19) are respectively provided with a spot lamp (23), the upper end faces of the display tubes (19) are respectively provided with an air port (22), the lower end faces of the display tubes (19) are respectively fixedly connected with a liquid return tube (20), the liquid return tubes (20) are respectively and fixedly provided with an adjusting valve (21), one side of the front end face of the display device (14) is fixedly connected with a first baffle (24), one side wall of the display device (14) is respectively and fixedly provided with a demonstration drawing board (36) and a chalk box (37), the chalk box (37) is arranged below the demonstration drawing board (36), one side of the display device (14) far away from the demonstration drawing board (36) is fixedly provided with a circular chart (38) and a board placing box (41), and the board placing box (41) is arranged below the circular chart (38), the round chart (38) is provided with a plurality of clamping grooves (39), the front end face of the round chart (38) is movably provided with a plurality of clamping plates (40), the rear end face of the display device (14) is fixedly provided with a magnetic plate (45) and an object placing box (48), the object placing box (48) is arranged below the magnetic plate (45), the outer wall of the magnetic plate (45) is provided with a plurality of magnetic blocks (46), an elastic connecting rope (47) is movably sleeved between every two adjacent magnetic blocks (46), one side of the magnetic plate (45) is slidably provided with a second laser lamp (43), the lower end of the second laser lamp (43) is rotatably provided with a second adjusting knob (42), and the other side of the magnetic plate (45) is fixedly provided with a second baffle plate (44).
2. The analytical equipment for teaching major economics of claim 1 wherein: hollow groove (15) have been seted up to display device (14) inner, hollow groove (15) bottom mounting is provided with a plurality of liquid storage boxes (16), and is a plurality of the equal fixedly connected with catheter (17) of liquid storage box (16) up end is a plurality of catheter (17) keep away from liquid storage box (16) one end fixed connection respectively is close to the up end rear side pipe body in a plurality of show pipes (19), and is a plurality of all fixed micropumps (18) of being provided with on catheter (17).
3. The analytical equipment for teaching major economics of claim 1 wherein: adjusting chutes (25) and bottom grooves (31) are respectively formed in the inner end of one side of the front end face of the display device (14), the bottom grooves (31) are arranged below the adjusting chutes (25), strip-shaped grooves (26) are formed in one side of the front end face of the display device (14), the adjusting chutes (25) and the strip-shaped grooves (26) are arranged in a penetrating mode, adjusting screw rods (27) are rotatably connected between the upper inner wall and the lower inner wall of the adjusting chutes (25), adjusting sliders (28) are sleeved on the outer walls of the adjusting screw rods (27) in a threaded mode, connecting pieces (29) are fixedly connected to the front end faces of the adjusting sliders (28), first laser lamps (30) are fixedly connected to the front end faces of the connecting pieces (29), the connecting pieces (29) and the strip-shaped grooves (26) are arranged in a sliding mode, connecting columns (32) are rotationally arranged in the bottom grooves (31), and the upper ends of the connecting columns (32) penetrate through the bottom grooves (31) and are fixedly connected with the adjusting screw rods (27), fixed cover on spliced pole (32) outer wall has been connect driven gear (33), driven gear (33) one side is provided with driving gear (34), driven gear (33) set up with driving gear (34) meshing, the terminal surface is close to on the outer wall of below one side and rotates and is provided with first adjust knob (35) before display device (14), display device (14) front end board body is run through to first adjust knob (35) rear end and with driving gear (34) fixed connection.
4. The analysis apparatus for teaching major economic science according to claim 1 or 3, wherein: the second adjusting knob (42) and the second laser lamp (43) are connected in the same way as the first adjusting knob (35) and the first laser lamp (30).
5. The analytical equipment for teaching major economics of claim 1 wherein: the clamping plates (40) and the clamping grooves (39) are clamped and arranged, and the clamping grooves (39) which are positioned at the circle center of the circular chart (38) and on the circumference are arranged in a circular array by taking the circle center of the circular chart (38) as a circular point.
6. The analytical equipment for teaching major economics of claim 1 wherein: the plurality of spot lamps (23) are all fixedly arranged on the lower end face of the top plate on the front side of the display device (14).
7. The analytical equipment for teaching major economics of claim 1 wherein: the upper end of the lifting screw rod (5) penetrates through the top plate body of the storage box (2) and is fixedly connected with a lifting adjusting motor (9).
8. The analytical equipment for teaching major economics of claim 1 wherein: the lower end face of the fixed base (1) is fixedly connected with self-locking universal wheels (49) close to four corners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110617684.XA CN113270016A (en) | 2021-06-03 | 2021-06-03 | Analytical equipment is used in teaching of economics specialty |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110617684.XA CN113270016A (en) | 2021-06-03 | 2021-06-03 | Analytical equipment is used in teaching of economics specialty |
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| Publication Number | Publication Date |
|---|---|
| CN113270016A true CN113270016A (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110617684.XA Pending CN113270016A (en) | 2021-06-03 | 2021-06-03 | Analytical equipment is used in teaching of economics specialty |
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| Country | Link |
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| CN (1) | CN113270016A (en) |
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| CN108790500A (en) * | 2018-05-30 | 2018-11-13 | 杨先平 | A kind of curve graph drawing auxiliary teaching device |
| CN209729183U (en) * | 2019-03-14 | 2019-12-03 | 山东外国语职业学院 | A kind of Teaching of Economics data displaying device |
| CN210039284U (en) * | 2019-05-16 | 2020-02-07 | 张宇 | Economics specialty teaching show analytical equipment |
| CN210691746U (en) * | 2019-06-11 | 2020-06-05 | 曹廷福 | Economics specialty propaganda and education equipment |
| CN111724641A (en) * | 2020-07-09 | 2020-09-29 | 浙江农林大学暨阳学院 | Economic management class teaching presentation device |
| CN112085976A (en) * | 2020-09-18 | 2020-12-15 | 山东水利职业学院 | Mathematics computer teaching equipment |
| CN112361175A (en) * | 2020-10-28 | 2021-02-12 | 滁州三界外信息科技有限公司 | Multi-color luminous dynamic display |
-
2021
- 2021-06-03 CN CN202110617684.XA patent/CN113270016A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108790500A (en) * | 2018-05-30 | 2018-11-13 | 杨先平 | A kind of curve graph drawing auxiliary teaching device |
| CN209729183U (en) * | 2019-03-14 | 2019-12-03 | 山东外国语职业学院 | A kind of Teaching of Economics data displaying device |
| CN210039284U (en) * | 2019-05-16 | 2020-02-07 | 张宇 | Economics specialty teaching show analytical equipment |
| CN210691746U (en) * | 2019-06-11 | 2020-06-05 | 曹廷福 | Economics specialty propaganda and education equipment |
| CN111724641A (en) * | 2020-07-09 | 2020-09-29 | 浙江农林大学暨阳学院 | Economic management class teaching presentation device |
| CN112085976A (en) * | 2020-09-18 | 2020-12-15 | 山东水利职业学院 | Mathematics computer teaching equipment |
| CN112361175A (en) * | 2020-10-28 | 2021-02-12 | 滁州三界外信息科技有限公司 | Multi-color luminous dynamic display |
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