CN105206144A - Buoyancy experimental device and method for physics teaching - Google Patents
Buoyancy experimental device and method for physics teaching Download PDFInfo
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- CN105206144A CN105206144A CN201510663762.4A CN201510663762A CN105206144A CN 105206144 A CN105206144 A CN 105206144A CN 201510663762 A CN201510663762 A CN 201510663762A CN 105206144 A CN105206144 A CN 105206144A
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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
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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Abstract
The invention relates to a buoyancy experimental device and method for physics teaching. Experimental equipment for studying the magnitude of buoyancy in middle school physics is quite simple, operating is quite troublesome, visuality is bad, no experimental method is given clearly, a demonstrative experiment and a grouping experiment cannot be well completed, and the teaching effect is poor. The bottom ends of supporting rods are connected with an adjustable base, and the top ends of the supporting rods are connected with an adjusting device. The adjusting device is connected with weights, water tanks are placed under the weights, and the water tanks are filled with water or solutions. An overflowing opening is formed in the upper edge of each water tank, and a square cup is placed under each overflowing opening. The buoyancy experimental device and method are used for buoyancy experiments in physics teaching.
Description
Technical field
The present invention relates to a kind of buoyancy experiment device for physics teaching and experimental technique.
Background technology
The experiment equipment of the size of junior physics research buoyancy is fairly simple, and operate cumbersome, visuality is also bad, and experimental technique does not also clearly provide, and lecture experiment and grouping experiment are all bad to be completed, and teaching efficiency is poor.
Summary of the invention
The object of this invention is to provide a kind of buoyancy experiment device for physics teaching and experimental technique, to solve existing buoyancy experiment troublesome poeration, visual bad, and the problem of teaching efficiency difference, and height and support angle can be regulated.
above-mentioned object is realized by following technical scheme:
A kind of buoyancy experiment device for physics teaching, its composition comprises: tank 1, square cup 2, weight 3, pole 4, the bottom of described pole 4 connects adjustable frames, the top of described pole 4 connects regulating device, described regulating device connects described weight 3, described weight 3 below put described tank 1, load water or solution in described tank 1, the upper edge of described tank 1 has gap 5, and described square cup 2 is put in the below of described gap 5.
The described buoyancy experiment device for physics teaching, described pole 4 is connected and fixed sheet I 21 and stator II 22, described stator I 21 and described stator II 22 all have central circular port 23, described regulating device comprises dwang 24, described dwang 24 is through described central circular port 23, the collar 25 of connecting band hook on described dwang 24, described dwang 24 connects locating ring 26, connecting line 27 on described locating ring 26, the bottom coupling hook 28 of described line 27, linking springs dynamometer 29 on described hook 28, the described weight 3 of the bottom hook connecting tape splicing link of described weight beam 29, one end of described dwang 24 connects Z-shaped handle 30, described stator II 22 has brake hole 31, brake club 8 is loaded in described brake hole 31.
The described buoyancy experiment device for physics teaching, described adjustable base comprises two feets 6, adjustment disk 7 and elevating lever 9, feet 6 described in two is connected and fixed axle 11 by axle sleeve 10, described stationary shaft 11 connects described adjustment disk 7, described adjustment disk 7 has arc port I 12 and arc port II 13, described axle sleeve 10 is connected and fixed bar 14, described fixed bar 14 moves on described arc port I 12, described fixed bar 14 is hollow stem, fixed by N shape locating clip 15 between described fixed bar 14 and described arc port II 13, through described pole 4 on described stationary shaft 11, elevating lever 9 described in loading in described pole 4, the outside surface of described pole 4 has chute 16, carriage release lever 17 is loaded in described chute 16, described carriage release lever 17 connects the top of described elevating lever 9, and the both sides of described chute 16 all connect magnetic sheet 18, connection rotating shaft 19 on described carriage release lever 17, described rotating shaft 19 connects magnet 20, and described magnet 20 coordinates described magnetic sheet 18 to use.
The described buoyancy experiment device for physics teaching, described weight 3 comprises cylindrical iron block I, cylindrical iron block II, three the respectively rectangular parallelepiped iron block of coupling hook, cylindrical aluminium block, square framework with rubber membrane.
The described buoyancy experiment device for physics teaching, described square cup 2 is marked with scale.
The described buoyancy experiment device for physics teaching, the distance between described locating ring 26 is 5cm ~ 10cm.
The experimental technique of the described buoyancy experiment device for physics teaching, first the slide downward elevating lever 9 in pole 4 is adjusted to the height of needs, magnet 20 is drawn onto the position of corresponding magnetic sheet 18, after regulating the angle of two feets 6, fix arc port II 13 and fixed bar 14 with N shape locating clip 15; Again dwang 24 is inserted stator I 21 with in the central circular port 23 of stator II 22, brake club 8 is loaded in the brake hole 31 opened on stator II 22 again, line 27 is wrapped on locating ring 26, the hook that the bottom of online 27 connects hangs up weight beam 29, at the weight 3 of the bottom hook connecting tape splicing link of weight beam 29; Upper edge will be put immediately below weight 3 have the tank 1 of gap 5, inject water or solution by tank 1, the below of gap 5 be put the graduated square cup 2 of band.
beneficial effect:
1. the present invention can complete all important experiment of junior middle school's buoyancy teaching.
2. weight beam of the present invention coordinate regulating device with the use of, when can make reading, registration is stablized, and experiment is accurately, easy to operate, solves the drawback with portable weight beam, is easy to teacher explains and observation of students.
3. of the present inventionly provide contrast experiment simultaneously, decrease experiment number, not only simple to operate, and visual good.
4. elevating lever of the present invention coordinates magnetic sheet, magnet and rotating shaft carriage release lever to use, and can help the angle regulating feet, support can be made again more firm.
5. square cup of the present invention facilitates the volume of direct metering liquid with scale.
6. fixed by N shape locating clip between fixed bar of the present invention and arc port II, both conveniently can regulate the angle of feet, again can the good feet of secured adjusted.
7. of the present invention three respectively coupling hook rectangular parallelepiped iron block can according to different experiments need select, applied widely.
8. the present invention studies the size of buoyancy and the relation of immersion depth, utilizes the rectangular parallelepiped iron block of three coupling hooks respectively easily to verify, ensures the accurate of experimental data.
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 is adjustable base schematic diagram of the present invention.
Accompanying drawing 3 is structural representations that the present invention utilizes bucket.
Accompanying drawing 4 is schematic diagram that single weight beam of the present invention uses.
embodiment:
embodiment 1
A kind of buoyancy experiment device for physics teaching, its composition comprises: tank 1, square cup 2, weight 3, pole 4, the bottom of described pole 4 connects adjustable frames, the top of described pole 4 connects regulating device, described regulating device connects described weight 3, described weight 3 below put described tank 1, load water or solution in described tank 1, the upper edge of described tank 1 has gap 5, and described square cup 2 is put in the below of described gap 5.
embodiment 2
The buoyancy experiment device for physics teaching described in embodiment 1, described pole 4 is connected and fixed sheet I 21 and stator II 22, described stator I 21 and described stator II 22 all have central circular port 23, described regulating device comprises dwang 24, described dwang 24 is through described central circular port 23, the collar 25 of connecting band hook on described dwang 24, described dwang 24 connects locating ring 26, connecting line 27 on described locating ring 26, the bottom coupling hook 28 of described line 27, linking springs dynamometer 29 on described hook 28, the described weight 3 of the bottom hook connecting tape splicing link of described weight beam 29, one end of described dwang 24 connects Z-shaped handle 30, described stator II 22 has brake hole 31, brake club 8 is loaded in described brake hole 31.
embodiment 3
The buoyancy experiment device for physics teaching described in embodiment 1, described adjustable base comprises two feets 6, adjustment disk 7 and elevating lever 9, feet 6 described in two is connected and fixed axle 11 by axle sleeve 10, described stationary shaft 11 connects described adjustment disk 7, described adjustment disk 7 has arc port I 12 and arc port II 13, described axle sleeve 10 is connected and fixed bar 14, described fixed bar 14 moves on described arc port I 12, described fixed bar 14 is hollow stem, fixed by N shape locating clip 15 between described fixed bar 14 and described arc port II 13, through described pole 4 on described stationary shaft 11, elevating lever 9 described in loading in described pole 4, the outside surface of described pole 4 has chute 16, carriage release lever 17 is loaded in described chute 16, described carriage release lever 17 connects the top of described elevating lever 9, and the both sides of described chute 16 all connect magnetic sheet 18, connection rotating shaft 19 on described carriage release lever 17, described rotating shaft 19 connects magnet 20, and described magnet 20 coordinates described magnetic sheet 18 to use.
embodiment 4
The buoyancy experiment device for physics teaching described in embodiment 1 or 3, described weight 3 comprises cylindrical iron block I, cylindrical iron block II, three the respectively rectangular parallelepiped iron block of coupling hook, cylindrical aluminium block, square framework with rubber membrane.
embodiment 5
The buoyancy experiment device for physics teaching described in embodiment 1, described square cup 2 is marked with scale.
embodiment 6
The buoyancy experiment device for physics teaching described in embodiment 3, the distance between described locating ring 26 is 5cm ~ 10cm
embodiment 7
Utilize the experimental technique of the buoyancy experiment device for physics teaching described in embodiment 1, first the slide downward elevating lever 9 in pole 4 is adjusted to the height of needs, magnet 20 is drawn onto the position of corresponding magnetic sheet 18, after regulating the angle of two feets 6, fix arc port II 13 and fixed bar 14 with N shape locating clip 15; Again dwang 24 is inserted stator I 21 with in the central circular port 23 of stator II 22, brake club 8 is loaded in the brake hole 31 opened on stator II 22 again, line 27 is wrapped on locating ring 26, the hook that the bottom of online 27 connects hangs up weight beam 29, at the weight 3 of the bottom hook connecting tape splicing link of weight beam 29; Upper edge will be put immediately below weight 3 have the tank 1 of gap 5, inject water or solution by tank 1, the below of gap 5 be put the graduated square cup 2 of band.
embodiment 8
The buoyancy experiment device for physics teaching described in embodiment 3, the collar 25 linking springs dynamometer 29 of described band hook, the bottom hook connecting splicing 33 of described weight beam 29, the bottom of described rope 33 connects bucket 32, and described bucket 32 is in the lower end of the gap 5 of described tank 1.
First the slide downward elevating lever 9 in pole 4 is adjusted to the height of needs, magnet 20 is drawn onto the position of corresponding magnetic sheet 18, after regulating the angle of two feets 6, fix arc port II 13 and fixed bar 14 with N shape locating clip 15; Again dwang 24 is inserted stator I 21 with in the central circular port 23 of stator II 22, brake club 8 is loaded in the brake hole 31 opened on stator II 22 again, line 27 is wrapped on locating ring 26, the hook that the bottom of online 27 connects hangs up weight beam 29, the weight 3 of the bottom connecting band link of the hook connected at weight beam 29; Upper edge will be put have the tank 1 of gap 5 immediately below weight 3, water or solution is injected by tank 1, the collar 25 of connecting band hook on dwang 24, the collar 25 linking springs dynamometer 29 of band hook, the bottom coupling hook of weight beam 29, described hook is by 33 connection buckets 32 of restricting, and described bucket 32 is in the lower end of the gap 5 of described tank 1.
embodiment 9
Embodiment 1 studies the size of buoyancy and the relation of fluid density:
It is identical that the present embodiment needs control V to arrange, and changes fluid density, measure buoyancy size, utilize the buoyancy experiment device shown in embodiment 1, line is rolled onto on dwang completely, the brake club dwang that moves right is braked, water and alcohol is filled respectively in two square tanks, each extension cylindrical iron block I under two demonstration weight beams, read gravity G, be moved to the left brake club, slowly rotate Z-shaped handle counterclockwise, until cylindrical iron block I is immersed in water and alcohol completely, brake club is utilized to brake, now can observe V row in two square cups identical, read the numerical value F of two demonstration weight beams, according to F floating=G-F obtains buoyancy respectively and compares, can draw: when V row is identical, fluid density is larger, buoyancy is larger.
embodiment 10
Embodiment 1 studies the size of buoyancy and the relation of object density:
It is identical with V row that the present embodiment needs to control fluid density, changes object density, measure buoyancy size; Utilize a kind of buoyancy experiment device shown in embodiment 1, the present embodiment difference from Example 9 is: all fill water in two tanks, cylindrical iron block I and cylindrical aluminium block is hung respectively under two demonstration weight beams, all the other operations are identical with embodiment 9, can reach a conclusion: buoyancy size and object density have nothing to do.
embodiment 11
Embodiment 1 studies the relation that the size of buoyancy and V arrange:
As shown in Figure 4, it is identical that the present embodiment needs to control fluid density, changes V row, measure buoyancy size; Utilize a kind of buoyancy experiment device shown in embodiment 1, fill water in tank, hang a cylindrical iron block I under demonstration weight beam, read the gravity G of weight beam, slowly rotate Z-shaped handle counterclockwise, observe cylindrical iron block I to immerse gradually in the process of water, the registration of weight beam reduces gradually, according to F floating=the known F of G-F is floating to be increased gradually, the V row observed in square cup increases gradually, can draw: when fluid density is identical, V row is larger, and buoyancy is larger.
embodiment 12
Embodiment 1 studies the size of buoyancy and the relation of V thing (weight for measured):
As shown in Figure 4, it is identical with V row that the present embodiment needs to control fluid density, changes V thing, measure buoyancy size, utilize a kind of buoyancy experiment device shown in embodiment 1, water is filled in tank, a cylindrical iron block I is hung under weight beam, read weight beam gravity G1, slowly rotate Z-shaped handle counterclockwise, until cylindrical iron block I is immersed in water completely, read the registration F1 of demonstration weight beam, slowly rotate Z-shaped handle clockwise, after cylindrical iron block I leaves the water surface, cylindrical iron block I is changed into the cylindrical iron block II that volume mass is all greater than cylindrical iron block I, read weight beam gravity G2, slowly rotate Z-shaped handle counterclockwise, cylindrical iron block II is slowly immersed in the water, until the water surface just reaches gap, now V row is identical, read the registration F2 of weight beam, relatively F
floating 1=G1-F1 and F
floating 2=G2-F2, can draw: buoyancy size and V thing have nothing to do.
embodiment 13
Embodiment 1 studies the size of buoyancy and the relation of immersion depth:
As shown in Figure 4, it is identical with V row that the present embodiment needs to control fluid density, changes immersion depth, measure buoyancy size; Utilize a kind of buoyancy experiment device shown in embodiment 1, water is filled in tank, weight is chosen as the rectangular parallelepiped iron block of three difference coupling hooks, the rectangular parallelepiped iron block hanging over for three times and different hook is measured three difference coupling hooks is divided with weight beam, read gravity G, by three respectively coupling hook rectangular parallelepiped iron block slowly part be immersed in the water, and ensure the V that immerses for three times
rowidentical, read registration F, the degree of depth now immersed for three times is different, compares three F respectively
floating=G-F, can draw: buoyancy size and part immersion depth have nothing to do; On the basis that the third time of the present embodiment tests, the rectangular parallelepiped iron block of three coupling hooks is respectively submerged into different depth in water, observes weight beam registration constant, can draw: buoyancy size and submergence have nothing to do.
embodiment 14
Embodiment 1 demonstrating floating force Producing reason:
As shown in Figure 4, utilize the buoyancy experiment device shown in embodiment 1, water is filled in tank, the square framework wrapped completely by rubber membrane is hung with under weight beam, square framework is allowed partly to immerse slowly and to be all immersed in water slowly, observe the sinking degree of the rubber membrane in 6 faces simultaneously, can draw: buoyancy is the pressure differential up and down of surrounding liquid to object, also can observe upwards pressure simultaneously is the key producing buoyancy.
embodiment 15
Embodiment 1 verifies Archimedes principle:
Buoyancy experiment device as shown in Figure 3, fills water (alcohol) in tank, read the heavy G of cylindrical iron block II
irong heavy with bucket
bucket, cylindrical iron block II is slowly immersed the middle different depth of water (alcohol), registration F and G when record many group parts immersion and submergence
bucket+water, F can be drawn simultaneously
floating=G
iron-F and G
row=G
bucket+water-G
bucket, compare F
floatingand G
row, just can verify Archimedes principle.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (7)
1. the buoyancy experiment device for physics teaching, its composition comprises: tank (1), square cup (2), weight (3), pole (4), it is characterized in that: the bottom of described pole (4) connects adjustable frames, the top of described pole (4) connects regulating device, described regulating device connects described weight (3), described tank (1) is put in (3) below of described weight, water or solution is loaded in described tank (1), the upper edge of described tank (1) has gap (5), described square cup (2) is put in the below of described gap (5).
2. the buoyancy experiment device for physics teaching according to claim 1, it is characterized in that: described pole (4) is connected and fixed sheet I (21) and stator II (22), described stator I (21) and described stator II (22) all have central circular port (23), described regulating device comprises dwang (24), described dwang (24) is through described central circular port (23), the collar (25) of the upper connecting band hook of described dwang (24), described dwang (24) connects locating ring (26), the upper connecting line (27) of described locating ring (26), the bottom coupling hook (28) of described line (27), the upper linking springs dynamometer (29) of described hook (28), the described weight (3) of the bottom hook connecting tape splicing link of described weight beam (29), one end of described dwang (24) connects Z-shaped handle (30), described stator II (22) has brake hole (31), brake club (8) is loaded in described brake hole (31).
3. the buoyancy experiment device for physics teaching according to claim 1, it is characterized in that: described adjustable base comprises two feets (6), adjustment disk (7) and elevating lever (9), feet (6) described in two is connected and fixed axle (11) by axle sleeve (10), adjustment disk (7) described in the upper connection of described stationary shaft (11), described adjustment disk (7) has arc port I (12) and arc port II (13), described axle sleeve (10) is connected and fixed bar (14), described fixed bar (14) is upper mobile at described arc port I (12), described fixed bar (14) is hollow stem, fixed by N shape locating clip (15) between described fixed bar (14) and described arc port II (13), through described pole (4) on described stationary shaft (11), elevating lever (9) described in loading in described pole (4), the outside surface of described pole (4) has chute (16), carriage release lever (17) is loaded in described chute (16), the top of the elevating lever (9) described in described carriage release lever (17) connects, the both sides of described chute (16) all connect magnetic sheet (18), the upper connection rotating shaft (19) of described carriage release lever (17), described rotating shaft (19) connects magnet (20), magnetic sheet (18) described in described magnet (20) coordinates uses.
4. the buoyancy experiment device for physics teaching according to claim 1 or 3, is characterized in that: described weight (3) comprises cylindrical iron block I, cylindrical iron block II, three the respectively rectangular parallelepiped iron block of coupling hook, cylindrical aluminium block, square framework with rubber membrane.
5. the buoyancy experiment device for physics teaching according to claim 1, is characterized in that: described square cup (2) is marked with scale.
6. the buoyancy experiment device for physics teaching according to claim 3, is characterized in that: the distance between described locating ring (26) is 5cm ~ 10cm.
7. utilize the experimental technique of the buoyancy experiment device for physics teaching described in claim 1, it is characterized in that: the height first the slide downward elevating lever (9) in pole (4) being adjusted to needs, magnet (20) is drawn onto the position of corresponding magnetic sheet (18), after regulating the angle of two feets (6), with the fixing arc port II (13) of N shape locating clip (15) and fixed bar (14); Again dwang (24) is inserted stator I (21) with in the central circular port (23) of stator II (22), brake club (8) is loaded in the brake hole (31) opened on stator II (22) again, line (27) is wrapped on locating ring (26), the hook that the bottom of (27) connects online hangs up weight beam (29), at the weight (3) of the bottom hook connecting tape splicing link of weight beam (29); Upper edge will be put immediately below weight (3) have the tank (1) of gap (5), inject water or solution by tank (1), the below of gap (5) be put the graduated square cup (2) of band.
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| CN201510663762.4A CN105206144B (en) | 2015-10-15 | 2015-10-15 | Buoyancy experimental device and method for physics teaching |
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| CN201510663762.4A CN105206144B (en) | 2015-10-15 | 2015-10-15 | Buoyancy experimental device and method for physics teaching |
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| CN106023742A (en) * | 2016-08-17 | 2016-10-12 | 张红 | Buoyancy demonstration teaching aid |
| CN106057034A (en) * | 2016-08-25 | 2016-10-26 | 董亚伦 | Buoyancy teaching demonstration structure |
| CN106097844A (en) * | 2016-08-17 | 2016-11-09 | 张红 | Buoyancy demonstration teaching aid |
| CN107610565A (en) * | 2017-11-01 | 2018-01-19 | 苏畅 | A kind of physics teaching buoyancy demonstration equipment |
| CN107633745A (en) * | 2017-11-01 | 2018-01-26 | 苏畅 | A kind of buoyancy experiment equipment for physics teaching |
| CN107833509A (en) * | 2017-12-19 | 2018-03-23 | 何德学 | A kind of buoyancy experiment device for physics teaching |
| CN107871426A (en) * | 2017-12-20 | 2018-04-03 | 黎桢宇 | A kind of senior middle school physics teaching experiment buoyancy demonstrating device |
| CN108305543A (en) * | 2018-04-03 | 2018-07-20 | 甘若霖 | A kind of physics facility for teaching |
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| CN110197608A (en) * | 2018-02-26 | 2019-09-03 | 孙旭春 | A kind of buoyancy experiment device and experimental method for physics teaching |
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| CN106023742B (en) * | 2016-08-17 | 2018-10-16 | 朱晶晶 | Buoyancy demonstration teaching aid |
| CN106097844A (en) * | 2016-08-17 | 2016-11-09 | 张红 | Buoyancy demonstration teaching aid |
| CN106023742A (en) * | 2016-08-17 | 2016-10-12 | 张红 | Buoyancy demonstration teaching aid |
| CN106097844B (en) * | 2016-08-17 | 2019-01-01 | 温州贝尔教仪有限公司 | Buoyancy demonstration teaching aid |
| CN106057034A (en) * | 2016-08-25 | 2016-10-26 | 董亚伦 | Buoyancy teaching demonstration structure |
| CN106057034B (en) * | 2016-08-25 | 2019-06-14 | 南京牧信科技有限公司 | Buoyancy teaching demonstration structure |
| CN107633745A (en) * | 2017-11-01 | 2018-01-26 | 苏畅 | A kind of buoyancy experiment equipment for physics teaching |
| CN107610565A (en) * | 2017-11-01 | 2018-01-19 | 苏畅 | A kind of physics teaching buoyancy demonstration equipment |
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| CN107610565B (en) * | 2017-11-01 | 2024-06-04 | 南京多产国际贸易咨询服务有限公司 | Buoyancy demonstration equipment for physical teaching |
| CN107833509A (en) * | 2017-12-19 | 2018-03-23 | 何德学 | A kind of buoyancy experiment device for physics teaching |
| CN107833509B (en) * | 2017-12-19 | 2020-02-21 | 何德学 | A buoyancy experimental apparatus for physical teaching |
| CN107871426A (en) * | 2017-12-20 | 2018-04-03 | 黎桢宇 | A kind of senior middle school physics teaching experiment buoyancy demonstrating device |
| CN110164263A (en) * | 2018-01-17 | 2019-08-23 | 金有芝 | A kind of lift flow rate of liquid experimental provision |
| CN108305543A (en) * | 2018-04-03 | 2018-07-20 | 甘若霖 | A kind of physics facility for teaching |
| CN108597320A (en) * | 2018-06-15 | 2018-09-28 | 王艺凝 | A kind of junior physics study appurtenance |
| CN108682243A (en) * | 2018-08-09 | 2018-10-19 | 吴依诺 | A kind of buoyancy instructional device |
| CN108682243B (en) * | 2018-08-09 | 2019-12-03 | 吴依诺 | A kind of buoyancy instructional device |
| CN111442665A (en) * | 2020-04-26 | 2020-07-24 | 浙江大学 | Comprehensive test platform of temperature difference energy driven underwater monitoring equipment |
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