CN110435885A - It is a kind of for acquiring the unmanned machine equipment of shallow-layer water sample - Google Patents
It is a kind of for acquiring the unmanned machine equipment of shallow-layer water sample Download PDFInfo
- Publication number
- CN110435885A CN110435885A CN201910741843.XA CN201910741843A CN110435885A CN 110435885 A CN110435885 A CN 110435885A CN 201910741843 A CN201910741843 A CN 201910741843A CN 110435885 A CN110435885 A CN 110435885A
- Authority
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- China
- Prior art keywords
- water
- unmanned plane
- immersion probe
- water sample
- bottle
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 239000000523 sample Substances 0.000 claims abstract description 70
- 238000005070 sampling Methods 0.000 claims abstract description 42
- 238000007654 immersion Methods 0.000 claims abstract description 39
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 238000007667 floating Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/08—Helicopters with two or more rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Remote Sensing (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention provides a kind of for acquiring the unmanned machine equipment of shallow-layer water sample, including unmanned plane, unreeling structure, water sampling bottle and console, console is installed on inside unmanned plane, unreeling structure is installed on the bottom of unmanned plane, water sampling bottle includes bottle cap and body, bottle cap is located at the top of body, it is provided in bottle cap close to switch, floating ball is provided in body, the bottom of body is provided with water inlet, water inlet is provided with check valve, the working time that manual control unmanned plane acquires water sample is dramatically saved by the setting of contact-making switch, make entirely to recycle water sample work to accomplish without any letup, it is all linked with one another, it is cleverly solved by the setting of check valve and how to complete to adopt water in the case where no human intervention, the water of water sampling is set not have biggish some rubbish to be mixed by the setting of filtering base, pass through the setting solution of immersion probe Unmanned plane determined in the stability for not thinking how to guarantee unmanned plane in the case where intervention.
Description
Technical field
The present invention relates to the air vehicle technique fields of acquisition shallow-layer water sample, and in particular to a kind of for acquiring shallow-layer water sample
Unmanned machine equipment.
Background technique
With the rapid development of economy, problem of environmental pollution more highlights, and water pollution is the prominent pollution of one of them,
How the prevention and treatment of water resource and the protection also concern and attention increasingly by country or even entire society, efficiently obtain water quality letter
Breath is the premise for effectively preventing and solving water pollution, and water quality sampling is then the key link for obtaining water quality information.Utilize nobody
Machine carries out water quality sampling, relative to traditional artificial sample and automatic sample mode, not only has high-efficient, at low cost, significantly
Labor intensity, outstanding advantages of staff's personal safety is more secure are reduced, still, either for sampled point environment complexity
The visually sampling site of bad observation, need manually to go manipulation unmanned plane implement entire work and all matters, big and small go to complete it is each
A details and having a single function for water sampling bottle are unable to satisfy actual needs.
Summary of the invention
The purpose of the present invention is to provide a kind of for acquiring the unmanned machine equipment of shallow-layer water sample, completes to acquire in unmanned plane
When water sample to greatest extent reduce manually allow unmanned plane go automatically complete part work and water sampling bottle water inlet and
The guarantee of water quality.
To achieve this purpose, the present invention adopts the following technical scheme:
It provides a kind of for acquiring the unmanned machine equipment of shallow-layer water sample, including unmanned plane, unreeling structure, water sampling bottle and control
Platform；
Console is installed on inside unmanned plane；
Unreeling structure is installed on the bottom of unmanned plane, and the fixing end of water sampling bottle is connected in the working end of unreeling structure；
Water sampling bottle includes bottle cap and body, and bottle cap is located at the top of body, is provided in bottle cap close to switch, in body
It is provided with floating ball, bottle cap is detachably connected with body, and the bottom of body is provided with water inlet, and water inlet is provided with check valve；
As a kind of for acquiring a kind of preferred embodiment of the unmanned machine equipment of shallow-layer water sample, check valve includes sheet rubber and hinge
Fitting, sheet rubber cover water inlet, and sheet rubber is connected by articulation piece in body bottom.
As a kind of for acquiring a kind of preferred embodiment of the unmanned machine equipment of shallow-layer water sample, water sampling bottle further included
Filter block, top and the body bottom of filtering base are detachably connected, and the inside of filtering base is equipped with the first filter plate and the second filter plate,
Several filter hole are equipped on first filter plate and the second filter plate, and the filter hole of the first filter plate is greater than the second filtering
The filter hole of plate.
As a kind of for acquiring a kind of preferred embodiment of the unmanned machine equipment of shallow-layer water sample, unreeling structure include motor,
Rack, transmission shaft, rack are fixed on uav bottom, and transmission shaft is installed in rack, the output shaft and transmission shaft driven of motor
Connection, for unreeling the wirerope-winding of water sampling bottle in transmission shaft.
As a kind of for acquiring a kind of preferred embodiment of the unmanned machine equipment of shallow-layer water sample, unreeling structure further includes by
One immersion probe and the second immersion probe, the first immersion probe and the second immersion probe structure are consistent, the first immersion probe and
Two immersion probes are mounted on wirerope, wherein the first immersion probe is close to water sampling bottle, and are located at water sampling bottle
Top.
As a kind of for acquiring a kind of preferred embodiment of the unmanned machine equipment of shallow-layer water sample, unreeling structure further includes limit
Part, locating part are made of one piece of transverse slat and two pieces of risers, transverse slat be equipped with rectangular aperture, two pieces of risers respectively with the both ends of transverse slat
It is fixedly connected, and two pieces of risers are connect with rack.
Beneficial effects of the present invention:
1, the working time that manual control unmanned plane acquires water sample is dramatically saved by the setting of contact-making switch, makes entirely to return
Water sample work is received to accomplish without any letup, it is all linked with one another；
2, it is cleverly solved by the setting of check valve and how to complete to adopt water in the case where no human intervention；
3, the water of water sampling is made not have biggish some rubbish to be mixed by the setting of filtering base；
4, by the setting of immersion probe solve unmanned plane do not think intervene in the case where how to guarantee the steady of unmanned plane
It is qualitative.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described.It should be evident that drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is front view described in the embodiment of the present invention；
Fig. 2 is left view described in the embodiment of the present invention；
Fig. 3 is unreeling structure left view described in the embodiment of the present invention；
Fig. 4 is water sampling bottle front view described in the embodiment of the present invention；
Fig. 5 is the water sampling bottle cross-sectional view obtained described in the embodiment of the present invention；
Fig. 6 is the first filter plate described in the embodiment of the present invention and the second filter plate top view；
Fig. 7 is body described in the embodiment of the present invention and check valve bottom view.
In figure:
1, unmanned plane；1a, console；
2, unreeling structure；2a, motor；2b, rack；2c, transmission shaft；2d, the first immersion probe；2e, the second immersion probe；2f limit
Position part；
3, water sampling bottle；3a, bottle cap；3a1, close switch；3b, body；3b1, floating ball；3b2, water inlet；3c, check valve；
3c1, sheet rubber；3c2, articulation piece；3d, filtering base；3d1, the first filter plate；3d2, the second filter plate.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Wherein, the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, should not be understood as to this
The limitation of patent；Embodiment in order to better illustrate the present invention, the certain components of attached drawing have omission, zoom in or out, not
Represent the size of actual product；It will be understood by those skilled in the art that certain known features and its explanation may be omitted and be in attached drawing
It is understood that.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that closed if there is the orientation of the instructions such as term " on ", "lower", "left", "right", "inner", "outside" or position
System is merely for convenience of description of the present invention and simplification of the description to be based on the orientation or positional relationship shown in the drawings, rather than indicates
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore retouch in attached drawing
The term for stating positional relationship only for illustration, should not be understood as the limitation to this patent, for the common skill of this field
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
In the description of the present invention unless specifically defined or limited otherwise, if there are the indicate indicators such as term " connection "
Between connection relationship, which shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or at
One；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection of two components interiors or the interaction relationship of two components.For those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term in the present invention with concrete condition.
It is a kind of for acquiring 1 equipment of unmanned plane of shallow-layer water sample shown in referring to Figure 1 to Figure 7, including unmanned plane 1, unreel
Mechanism 2, water sampling bottle 3 and console 1a；
Console 1a is installed on inside unmanned plane 1；
Unreeling structure 2 is installed on the bottom of unmanned plane 1, and the fixing end of water sampling bottle 3 is connected in the working end of unreeling structure 2；
Water sampling bottle 3 includes bottle cap 3a and body 3b, and bottle cap 3a is located at the top of body 3b, is provided in bottle cap 3a close
Floating ball 3b1 is provided in switch 3a1, body 3b, bottle cap 3a is detachably connected with body 3b, and the bottom of body 3b is provided with into water
Check valve 3c is provided at mouth 3b2, water inlet 3b2；
Close to switch 3a1 complete entitled " close to switch ", model: LJ12A3-Z/EX, manual control unmanned plane 1 seeks sources of water acquisition,
Unmanned plane 1 hovers in target water overhead, and unreeling structure 2 unreels the rope for being loaded with water sampling bottle 3 down, in water sampling
When bottle 3 is immersed in the water, a large amount of water sample pours in water inlet 3b2 by check valve 3c, and water sample enters body 3b by water inlet 3b2
Inside, the floating ball 3b1 inside body 3b are risen steadily by water level gradually close proximity to switch 3a1, close to switch 3a1
After experiencing the in-position floating ball 3b1,1 console 1a of unmanned plane is sent a signal to close to switch 3a1, console 1a receives finger
After order, rolling-up mechanism withdraws water sampling bottle 3.
Check valve 3c includes sheet rubber 3c1 and articulation piece 3c2, and sheet rubber 3c1 covers water inlet 3b2, and sheet rubber 3c1 is logical
Articulation piece 3c2 is crossed to connect in the bottom body 3b；
Water flow could be by water inlet 3b2 and into body 3b by check valve 3c, and water flow can only be by the bottom body 3b under
The sheet rubber 3c1 that pushes open on and enters body 3b by water inlet 3b2, can be due to the work of water if there is sheet rubber 3c1 when flowing backwards
It is firmly closed water inlet 3b2, and since the slewing area maximum of articulation piece 3c2 can only make sheet rubber 3c1 be located at closure,
To make the water in bottle that can not flow backwards.
Water sampling bottle 3 further includes filtering base 3d, and top and the bottom body 3b of filtering base 3d is detachably connected, filtering base
The inside of 3d is equipped on the first filter plate 3d1 and the second filter plate 3d2, the first filter plate 3d1 and the second filter plate 3d2 and is equipped with
Several filter hole, and the filter hole of the first filter plate 3d1 is greater than the filter hole of the second filter plate 3d2；
Water flow enters at first in filtering base 3d, first has the first filter plate 3d1 filtering, is then filtered again by the second filter plate 3d2, most
The purpose that just can enter water inlet 3b2, the first filter plate 3d1 and the second filter plate 3d2 setting afterwards is to filter out in water
Some impurity, in order to avoid blocking and excessive the impurity effect collecting amount of water sample are carried out to water inlet 3b2.
Unreeling structure 2 includes motor 2a, rack 2b, transmission shaft 2c, and rack 2b is fixed on 1 bottom of unmanned plane, transmission shaft 2c
It is installed on rack 2b, the output shaft and transmission shaft 2c of motor 2a is sequentially connected, and the wirerope for unreeling water sampling bottle 3 twines
It is around on transmission shaft 2c；
Rack 2b is used for fixed conveyor axis 2c, and motor 2a drives transmission shaft 2c rotation by rotation and stops, transmission shaft 2c rotation
So that wirerope unreeled, wound and stopped, the load-bearing of water sampling bottle 3 and the rise and fall of height and positioning all unreel
The effect of mechanism 2.
Unreeling structure 2 further includes by the first immersion probe 2d and the second immersion probe 2e, the first immersion probe 2d and second
Immersion probe 2e structure is consistent, and the first immersion probe 2d and the second immersion probe 2e are mounted on wirerope, wherein the first water
Leaching probe 2d is located at the top of water sampling bottle 3 close to water sampling bottle 3；
Complete entitled " immersion probe Water immersion detector ", the model of first immersion probe 2d and the second immersion probe 2e: TR-Y12V,
When unreeling structure 2 by water sampling bottle 3 into the water when, when the first immersion probe 2d touches the water surface unreeling structure 2 stopping put
Volume, can have an impact to the steadily hovering of unmanned plane 1 since water surface upper air volume is bigger, so when the first immersion probe 2d leaves the water surface
When, the first immersion probe 2d sends a signal to console 1a, and unmanned plane 1 slowly declines after receiving signal, when the second water logging
Pop one's head in the 2e contact water surface when, the second immersion probe 2e sends a signal to console 1a, and unmanned plane 1 receives after signal on slowly
It rises.
Described is a kind of for acquiring 1 equipment of unmanned plane of shallow-layer water sample, which is characterized in that unreeling structure 2 further includes limit
Position part 2f, locating part 2f is made of one piece of transverse slat and two pieces of risers, and transverse slat is equipped with rectangular aperture, two pieces of risers respectively with transverse slat
Both ends be fixedly connected, and two pieces of risers are connect with rack 2b；
Wirerope runs through rectangular aperture, and locating part 2f is used to prevent unreeling structure 2 from winding the water logging detection on wirerope always
Device is also taken in, and is used to protect Water immersion detector and water sampling bottle 3 so being additionally arranged locating part 2f.
The working principle of the invention: manual control unmanned plane 1 seeks sources of water acquisition, the hovering in target water of unmanned plane 1
Stop, motor 2a drives transmission shaft 2c rotation by rotation, and the water sampling bottle 3 that transmission shaft 2c rotation connects wirerope is put
Volume, when water sampling bottle 3 into the water when, when the first immersion probe 2d touches the water surface unreeling structure 2 stopping unreel, due to water
Face upper air volume is bigger to have an impact to the steadily hovering of unmanned plane 1, so when the first immersion probe 2d leaves the water surface, the
One immersion probe 2d sends a signal to console 1a, and unmanned plane 1 slowly declines after receiving signal, when the second immersion probe 2e is contacted
When the water surface, the second immersion probe 2e sends a signal to console 1a, and unmanned plane 1 slowly rises after receiving signal to guarantee water
Sample collecting bottle 3 all keeps uniform height always, and when water sampling bottle 3 is immersed in the water, a large amount of water flows enter filtering base 3d at first
It is interior, it is first filtered by the first filter plate 3d1, is then filtered again by the second filter plate 3d2, last water flow could be through by check valve 3c
Cross water inlet 3b2 and enter body 3b, water flow can only by the bottom body 3b from bottom to top by check valve 3c, water sample passes through
Water inlet 3b2 enters inside body 3b, the floating ball 3b1 inside body 3b by water level risen steadily gradually close proximity to
Switch 3a1, after experiencing the in-position floating ball 3b1 close to switch 3a1, by sending a signal to 1 console 1a of unmanned plane, nothing
After man-machine 1 receives instruction, rolling-up mechanism passes through the withdrawal water sampling bottle 3 of locating part 2f point of safes.
It is to be understood that above-mentioned specific embodiment is only that presently preferred embodiments of the present invention and institute's application technology are former
Reason.It will be understood by those skilled in the art that various modifications, equivalent replacement, variation etc. can also be done to the present invention.But this
A little transformation, all should be within protection scope of the present invention without departing from spirit of the invention.In addition, present specification and power
Some terms used in sharp claim are not limitation, it is only for convenient for description.
Claims (6)
1. a kind of unmanned plane (1) equipment for acquiring shallow-layer water sample, which is characterized in that including unmanned plane (1), unreeling structure
(2), water sampling bottle (3) and console (1a)；It is internal that console (1a) is installed on unmanned plane (1)；Unreeling structure (2) is installed on
The fixing end of the bottom of unmanned plane (1), water sampling bottle (3) is connected in the working end of unreeling structure (2)；Water sampling bottle (3)
It include bottle cap (3a) and body (3b), bottle cap (3a) is located at the top of body (3b), is provided in bottle cap (3a) close to switch
(3a1) is electrically connected with console (1a) close to switch (3a1), is provided with floating ball (3b1) in body (3b), bottle cap (3a) and bottle
Body (3b) is detachably connected, and the bottom of body (3b) is provided with water inlet (3b2), is provided with check valve at water inlet (3b2)
(3c).
2. a kind of unmanned plane (1) equipment for acquiring shallow-layer water sample according to claim 1, which is characterized in that unidirectional
Valve (3c) includes sheet rubber (3c1) and articulation piece (3c2), and sheet rubber (3c1) covers water inlet (3b2), and sheet rubber (3c1) is logical
Articulation piece (3c2) is crossed to connect in the body bottom (3b).
3. a kind of unmanned plane (1) equipment for acquiring shallow-layer water sample according to claim 1, which is characterized in that water sample
Collecting bottle (3) further includes filtering base (3d), and top and bottom body (3b) of filtering base (3d) are detachably connected, filtering base (3d)
Inside be equipped with the first filter plate (3d1) and the second filter plate (3d2), on the first filter plate (3d1) and the second filter plate (3d2)
Several filter hole are equipped with, and the filter hole of the first filter plate (3d1) is greater than the filter hole of the second filter plate (3d2).
4. a kind of unmanned plane (1) equipment for acquiring shallow-layer water sample according to claim 1, which is characterized in that unreel
Mechanism (2) includes motor (2a), rack (2b), transmission shaft (2c), and rack (2b) is fixed on unmanned plane (1) bottom, transmission shaft
(2c) is installed on rack (2b), and the output shaft and transmission shaft (2c) of motor (2a) are sequentially connected, for unreeling water sampling bottle
(3) wirerope-winding is on transmission shaft (2c).
5. a kind of unmanned plane (1) equipment for acquiring shallow-layer water sample according to claim 4, which is characterized in that unreel
Mechanism (2) further includes by the first immersion probe (2d) and the second immersion probe (2e), the first immersion probe (2d) and the second water logging
(2e) structure of popping one's head in is consistent, and the first immersion probe (2d) and the second immersion probe (2e) are mounted on wirerope, wherein first
Immersion probe (2d) is located at the top of water sampling bottle (3) close to water sampling bottle (3), the first immersion probe (2d) and
Second immersion probe (2e) is electrically connected with console (1a).
6. a kind of unmanned plane (1) equipment for acquiring shallow-layer water sample according to claim 1, which is characterized in that unreel
Mechanism (2) further includes locating part (2f), and locating part (2f) is made of one piece of transverse slat and two pieces of risers, and transverse slat is opened equipped with rectangle
Mouthful, two pieces of risers are fixedly connected with the both ends of transverse slat respectively, and two pieces of risers are connect with rack (2b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910741843.XA CN110435885A (en) | 2019-08-13 | 2019-08-13 | It is a kind of for acquiring the unmanned machine equipment of shallow-layer water sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910741843.XA CN110435885A (en) | 2019-08-13 | 2019-08-13 | It is a kind of for acquiring the unmanned machine equipment of shallow-layer water sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110435885A true CN110435885A (en) | 2019-11-12 |
Family
ID=68434825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910741843.XA Withdrawn CN110435885A (en) | 2019-08-13 | 2019-08-13 | It is a kind of for acquiring the unmanned machine equipment of shallow-layer water sample |
Country Status (1)
| Country | Link |
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| CN (1) | CN110435885A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683585A (en) * | 2020-12-09 | 2021-04-20 | 中国地质科学院岩溶地质研究所 | Open-air water sample collection system in karst district |
-
2019
- 2019-08-13 CN CN201910741843.XA patent/CN110435885A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683585A (en) * | 2020-12-09 | 2021-04-20 | 中国地质科学院岩溶地质研究所 | Open-air water sample collection system in karst district |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191112 |