CN112602519A - Sound wave rain enhancement system based on flight carrier - Google Patents
Sound wave rain enhancement system based on flight carrier Download PDFInfo
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- CN112602519A CN112602519A CN202011549511.0A CN202011549511A CN112602519A CN 112602519 A CN112602519 A CN 112602519A CN 202011549511 A CN202011549511 A CN 202011549511A CN 112602519 A CN112602519 A CN 112602519A
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- 230000004048 modification Effects 0.000 claims abstract description 7
- 238000012986 modification Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 239000000725 suspension Substances 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 210000001015 abdomen Anatomy 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 abstract description 6
- 229910021612 Silver iodide Inorganic materials 0.000 abstract description 6
- 229940045105 silver iodide Drugs 0.000 abstract description 6
- 239000003054 catalyst Substances 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 238000013459 approach Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G15/00—Devices or methods for influencing weather conditions
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/10—Simultaneous control of position or course in three dimensions
- G05D1/101—Simultaneous control of position or course in three dimensions specially adapted for aircraft
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Atmospheric Sciences (AREA)
- Environmental Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
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Abstract
The invention discloses a sound wave rain enhancement system based on a flight carrier, which utilizes an aircraft-mounted sound wave rain enhancement system to approach or penetrate a target operation cloud layer to carry out weather modification operation, solves the problem of time lag of artificial rain enhancement by utilizing an aircraft-mounted silver iodide and other catalysts, and simultaneously solves the problems of small sound diffusion range, sound energy attenuation, incapability of directly contacting with the operation cloud layer and the like of sound wave rain enhancement on the ground. The acoustic wave operation system can be divided into an air hovering operation system and a cruising operation system according to different application conditions. The hovering operation system comprises: the aircraft that possesses functions such as VTOL, hover in the air, ground control station to and install on above-mentioned aircraft: an acoustic rain enhancement system and a weather detection device; the cruise operation system includes: aircraft with cruise function, ground control station, and install on above-mentioned aircraft: the system comprises a sound wave rain enhancement system, an airplane hanger and a weather detection device.
Description
Technical Field
The invention relates to the technical field of sound wave rain enhancement of a measuring scale flight carrier, in particular to a sound wave rain enhancement system based on a flight carrier.
Background
Due to global climate change and the occurrence of disastrous weather such as drought, high temperature, hail and the like, people urgently need to take measures to relieve the harm brought to the life of people by climate abnormality. With the change of the scientific and technological level, the artificial rainfall can be widely used for drought resistance, hail resistance and rain resistance, improves the ecological environment, can relieve the shortage of electric power through temperature reduction, and has very important effect on fog dissipation of airports. At present, the main methods of artificial precipitation are airplanes, antiaircraft guns and rocket projectiles, but the precipitation method is to send silver iodide into the high altitude by the silver iodide rocket projectiles, and is limited by airspace and operating points, so that large-range high-intensity operation is difficult, and therefore the precipitation efficiency is low.
The problem of time lag of artificial rain enhancement by using a silver iodide catalyst carried by an airplane and the like cannot be solved in the prior art, and the problems of small sound diffusion range, sound energy attenuation, incapability of directly contacting with an operation cloud layer and the like of sound wave rain enhancement on the ground exist. The system can not be divided into an air hovering operation system and a cruising operation system according to different application conditions.
Disclosure of Invention
The invention aims to provide a sound wave rain enhancement system based on a flight carrier, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a sound wave precipitation system based on flight carrier which characterized in that: the system comprises two subsystems, an air suspension operation system and a cruise operation system.
The first type of subsystem in the acoustic wave rain enhancement system based on the flight carrier comprises: an airborne hover job system, comprising: the aerocraft with the functions of vertical take-off and landing, hovering in the air and the like comprises an aerocraft with the functions of vertical take-off and landing, hovering in the air and the like, a ground control station, a sound generating device and an aerial image collecting device, wherein the sound generating device and the aerial image collecting device are mounted under the aerocraft;
the second type of subsystem in the acoustic wave rain enhancement system based on the flight carrier is as follows: a cruise operation system, comprising: the system comprises an aircraft with a cruise function, a ground control station and a sound generating device mounted under the aircraft, wherein the aircraft with the cruise function comprises but is not limited to a fixed-wing unmanned aerial vehicle;
the classification reasons of the two types of subsystems in the acoustic wave rain enhancement system based on the flight carrier are divided according to different application scenes of the system.
Furthermore, the application scene of the acoustic wave rain enhancement system based on the flight carrier is mainly determined according to weather conditions and scales in the early weather period, aircraft take-off and landing conditions, equipment communication links and the like, wherein the weather conditions and scales can be determined according to real-time weather monitoring equipment such as weather radars and the like, conventional weather forecast, numerical value forecast and the like; the aircraft take-off and landing conditions and the equipment communication link are determined according to the flight performance of the aircraft which is actually used.
Further, the ground control system in the two types of subsystems of the acoustic wave rain enhancement system based on the flight vehicle can realize functions including: real-time control of the aircraft and real-time feedback of flight state information; the method comprises the following steps of starting and stopping control of the sound wave rain enhancement system, sound wave waveform display and equipment state display; the weather detection device controls, detects and displays the state parameters in real time; the ground control system should reserve an interface and can be externally connected with meteorological information such as a meteorological radar and numerical prediction.
Further, the operation modes of the two subsystems of the acoustic wave rain enhancement system based on the flight carrier comprise:
cloud bottom mode:
the air suspension operation system requires the aircraft to fly to the position below a target cloud bottom for artificial weather influence operation in the cloud bottom mode, and the sound production direction of the suspended sound wave sound production device points to the cloud bottom;
in the cloud base mode, the cruising operation system requires that the sound wave generating device is arranged at the upper part of the aircraft body, the aircraft flies back and forth along the central line direction of a target cloud layer artificially influencing weather operation, and the flying height is lower than the cloud base;
a cloud penetrating mode:
in the cloud penetrating mode, the air suspension operation system requires that the aircraft suspends in a target cloud layer artificially influencing weather operation, the sound production direction of the suspended sound wave sound production device is parallel to the ground, and sound waves are diffused and spread all around;
the cruising operation system requires that the flying height of the aircraft is larger than the cloud base height of an artificial weather influence operation target cloud layer and smaller than the cloud top height of the artificial weather influence operation target cloud layer in the cloud penetrating mode, and the mounting position of the sound wave generating device can be arranged below the wing, below the belly and above the fuselage according to different flying heights of the aircraft;
cloud top mode:
the hovering operation system requires the aircraft to fly above a target cloud roof for artificial weather operation in the cloud roof mode, and the sound production direction of the suspended sound wave sound production device points to the cloud roof;
in the cloud top mode, the cruising operation system requires that the sound wave generating device is arranged at the lower part of the aircraft body or below the wings, the aircraft flies back and forth along the direction of the center line of a target cloud layer artificially influencing weather operation, and the flying height is higher than the cloud top.
Further, when the flight mode of the acoustic wave rain enhancement system based on the flight carrier is adopted for weather modification operation in the flight mode of claim 6, a single aircraft can be adopted for operation, and multiple aircraft array operation can be adopted, wherein the operation modes of each aircraft can be flexibly combined according to weather conditions, aircraft performance and the like.
Further, the acoustic precipitation enhancement system based on the flying carrier requires: besides conventional capacity, the aircraft in the air suspension operation system is required to have long-time air suspension capacity, and the load capacity is larger than the total weight of other devices in the system; in addition to conventional capabilities, an aircraft in a cruise operating system requires long-endurance flight capabilities and a load-carrying capacity greater than the total weight of other devices in the system.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a sound wave rain enhancement system based on a flight carrier, which utilizes an aircraft-mounted sound wave rain enhancement system to approach or penetrate a target operation cloud layer to carry out weather modification operation, solves the problem of time lag of artificial rain enhancement by utilizing an aircraft-mounted silver iodide and other catalysts, and simultaneously solves the problems of small sound diffusion range, sound energy attenuation, incapability of directly contacting with the operation cloud layer and the like of sound wave rain enhancement on the ground. The acoustic wave operation system can be divided into an air hovering operation system and a cruising operation system according to different application conditions.
Drawings
Fig. 1 is a system block diagram of a sound wave rain enhancement system based on a flight carrier.
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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the present invention provides a technical solution:
in order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a sound wave precipitation system based on flight carrier which characterized in that: the system comprises two subsystems, an air suspension operation system and a cruise operation system.
The first type of subsystem in the acoustic wave rain enhancement system based on the flight carrier comprises: an airborne hover job system, comprising: the aerocraft with the functions of vertical take-off and landing, hovering in the air and the like comprises an aerocraft with the functions of vertical take-off and landing, hovering in the air and the like, a ground control station, a sound generating device and an aerial image collecting device, wherein the sound generating device and the aerial image collecting device are mounted under the aerocraft;
the second type of subsystem in the acoustic wave rain enhancement system based on the flight carrier is as follows: a cruise operation system, comprising: the system comprises an aircraft with a cruise function, a ground control station and a sound generating device mounted under the aircraft, wherein the aircraft with the cruise function comprises but is not limited to a fixed-wing unmanned aerial vehicle;
the classification reasons of the two types of subsystems in the acoustic wave rain enhancement system based on the flight carrier are divided according to different application scenes of the system.
In order to further improve the use function of the acoustic wave rain enhancement system based on the flight carrier, the application scene of the acoustic wave rain enhancement system based on the flight carrier is mainly determined according to weather conditions and scales in the early weather period, aircraft take-off and landing conditions, equipment communication links and the like, and the weather conditions and scales can be determined according to real-time weather monitoring equipment such as weather radars and the like, conventional weather forecast, numerical value forecast and the like; the aircraft take-off and landing conditions and the equipment communication link are determined according to the flight performance of the aircraft which is actually used.
In order to further improve the use function of the flight vehicle-based acoustic wave rain enhancement system, the ground control system in the two types of subsystems of the flight vehicle-based acoustic wave rain enhancement system can realize the following functions: real-time control of the aircraft and real-time feedback of flight state information; the method comprises the following steps of starting and stopping control of the sound wave rain enhancement system, sound wave waveform display and equipment state display; the weather detection device controls, detects and displays the state parameters in real time; the ground control system should reserve an interface and can be externally connected with meteorological information such as a meteorological radar and numerical prediction.
In order to further improve the use function of the acoustic wave rain enhancement system based on the flight carrier, the operation modes of the two subsystems of the acoustic wave rain enhancement system based on the flight carrier comprise:
cloud bottom mode:
the air suspension operation system requires the aircraft to fly to the position below a target cloud bottom for artificial weather influence operation in the cloud bottom mode, and the sound production direction of the suspended sound wave sound production device points to the cloud bottom;
in the cloud base mode, the cruising operation system requires that the sound wave generating device is arranged at the upper part of the aircraft body, the aircraft flies back and forth along the central line direction of a target cloud layer artificially influencing weather operation, and the flying height is lower than the cloud base;
a cloud penetrating mode:
in the cloud penetrating mode, the air suspension operation system requires that the aircraft suspends in a target cloud layer artificially influencing weather operation, the sound production direction of the suspended sound wave sound production device is parallel to the ground, and sound waves are diffused and spread all around;
the cruising operation system requires that the flying height of the aircraft is larger than the cloud base height of an artificial weather influence operation target cloud layer and smaller than the cloud top height of the artificial weather influence operation target cloud layer in the cloud penetrating mode, and the mounting position of the sound wave generating device can be arranged below the wing, below the belly and above the fuselage according to different flying heights of the aircraft;
cloud top mode:
the hovering operation system requires the aircraft to fly above a target cloud roof for artificial weather operation in the cloud roof mode, and the sound production direction of the suspended sound wave sound production device points to the cloud roof;
in the cloud top mode, the cruising operation system requires that the sound wave generating device is arranged at the lower part of the aircraft body or below the wings, the aircraft flies back and forth along the direction of the center line of a target cloud layer artificially influencing weather operation, and the flying height is higher than the cloud top.
In order to further improve the use function of the acoustic wave rain enhancement system based on the flight carrier, when the flight mode of the acoustic wave rain enhancement system based on the flight carrier is adopted for weather modification operation, a single aircraft can be adopted for operation, and a multi-aircraft array can also be adopted for operation, wherein the operation mode of each aircraft can be flexibly combined according to weather conditions, aircraft performance and the like.
In order to further improve the use function of the acoustic wave rain enhancement system based on the flight carrier, the acoustic wave rain enhancement system based on the flight carrier requires that: besides conventional capacity, the aircraft in the air suspension operation system is required to have long-time air suspension capacity, and the load capacity is larger than the total weight of other devices in the system; in addition to conventional capabilities, an aircraft in a cruise operating system requires long-endurance flight capabilities and a load-carrying capacity greater than the total weight of other devices in the system.
The invention provides a sound wave rain enhancement system based on a flight carrier, which utilizes an aircraft-mounted sound wave rain enhancement system to approach or penetrate a target operation cloud layer to carry out weather modification operation, solves the problem of time lag of artificial rain enhancement by utilizing an aircraft-mounted silver iodide and other catalysts, and simultaneously solves the problems of small sound diffusion range, sound energy attenuation, incapability of directly contacting with the operation cloud layer and the like of sound wave rain enhancement on the ground. The acoustic wave operation system can be divided into an air suspension operation system and a cruise operation system according to different application conditions
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a sound wave precipitation system based on flight carrier which characterized in that: the system comprises two subsystems, an air hovering operation system and a cruising operation system;
the first type of subsystem in the acoustic wave rain enhancement system based on the flight carrier comprises: an airborne hover job system, comprising: the aerocraft with the functions of vertical take-off and landing, hovering in the air and the like comprises an aerocraft with the functions of vertical take-off and landing, hovering in the air and the like, a ground control station, a sound generating device and an aerial image collecting device, wherein the sound generating device and the aerial image collecting device are mounted under the aerocraft;
the second type of subsystem in the acoustic wave rain enhancement system based on the flight carrier is as follows: a cruise operation system, comprising: the system comprises an aircraft with a cruise function, a ground control station and a sound generating device mounted under the aircraft, wherein the aircraft with the cruise function comprises but is not limited to a fixed-wing unmanned aerial vehicle;
the classification reasons of the two types of subsystems in the acoustic wave rain enhancement system based on the flight carrier are divided according to different application scenes of the system.
2. A flying vehicle based acoustic wave rain enhancement system according to claim 1, wherein: the application scene of the acoustic wave rain enhancement system based on the flight carrier is mainly determined according to weather conditions and scales in the early stage of artificially influenced weather, aircraft take-off and landing conditions, equipment communication links and the like, wherein the weather conditions and scales can be determined according to real-time weather monitoring equipment such as weather radars and the like, conventional weather forecast, numerical value forecast and the like; the aircraft take-off and landing conditions and the equipment communication link are determined according to the flight performance of the aircraft which is actually used.
3. A flying vehicle based acoustic wave rain enhancement system according to claim 1, wherein: the ground control system in the two types of subsystems of the acoustic wave rain enhancement system based on the flight carrier can realize functions comprising: real-time control of the aircraft and real-time feedback of flight state information; the method comprises the following steps of starting and stopping control of the sound wave rain enhancement system, sound wave waveform display and equipment state display; the weather detection device controls, detects and displays the state parameters in real time; the ground control system should reserve an interface and can be externally connected with meteorological information such as a meteorological radar and numerical prediction.
4. A flying vehicle based acoustic wave rain enhancement system according to claim 1, wherein: the operation modes of two types of subsystems of the acoustic wave rain enhancement system based on the flight carrier comprise:
cloud bottom mode:
the air suspension operation system requires the aircraft to fly to the position below a target cloud bottom for artificial weather influence operation in the cloud bottom mode, and the sound production direction of the suspended sound wave sound production device points to the cloud bottom;
in the cloud base mode, the cruising operation system requires that the sound wave generating device is arranged at the upper part of the aircraft body, the aircraft flies back and forth along the central line direction of a target cloud layer artificially influencing weather operation, and the flying height is lower than the cloud base;
a cloud penetrating mode:
in the cloud penetrating mode, the air suspension operation system requires that the aircraft suspends in a target cloud layer artificially influencing weather operation, the sound production direction of the suspended sound wave sound production device is parallel to the ground, and sound waves are diffused and spread all around;
the cruising operation system requires that the flying height of the aircraft is larger than the cloud base height of an artificial weather influence operation target cloud layer and smaller than the cloud top height of the artificial weather influence operation target cloud layer in the cloud penetrating mode, and the mounting position of the sound wave generating device can be arranged below the wing, below the belly and above the fuselage according to different flying heights of the aircraft;
cloud top mode:
the hovering operation system requires the aircraft to fly above a target cloud roof for artificial weather operation in the cloud roof mode, and the sound production direction of the suspended sound wave sound production device points to the cloud roof;
in the cloud top mode, the cruising operation system requires that the sound wave generating device is arranged at the lower part of the aircraft body or below the wings, the aircraft flies back and forth along the direction of the center line of a target cloud layer artificially influencing weather operation, and the flying height is higher than the cloud top.
5. The acoustic wave rain enhancement system based on the flying carrier as claimed in claim 6, wherein the acoustic wave rain enhancement system based on the flying carrier can be operated by a single aircraft or by a multi-aircraft array when the flying mode as claimed in claim 6 is adopted for weather modification, and the operation modes of each aircraft can be flexibly combined according to weather conditions, aircraft performance and the like.
6. The airborne vehicle-based acoustic precipitation enhancement system of claim 1, wherein the airborne vehicle-based acoustic precipitation enhancement system requires: besides conventional capacity, the aircraft in the air suspension operation system is required to have long-time air suspension capacity, and the load capacity is larger than the total weight of other devices in the system; in addition to conventional capabilities, an aircraft in a cruise operating system requires long-endurance flight capabilities and a load-carrying capacity greater than the total weight of other devices in the system.
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| CN202011549511.0A CN112602519B (en) | 2020-12-24 | 2020-12-24 | Sound wave rain enhancement system based on flight carrier |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157092A (en) * | 1996-02-13 | 1997-08-20 | 北京市西城区新开通用试验厂 | Voice exciting rainer |
| GB0900905D0 (en) * | 2009-01-20 | 2009-03-04 | Truman Malcolm I | Electrostatic rain cloud machine |
| JP3158195U (en) * | 2008-10-17 | 2010-03-25 | 完 森田 | Ecology processing computer Typhoon countermeasure aircraft |
| US20130015260A1 (en) * | 2004-10-07 | 2013-01-17 | David Joseph Schulte | Concept and model for utilizing high-frequency or radar or microwave producing or emitting devices to produce, effect, create or induce lightning or lightspeed or visible to naked eye electromagnetic pulse or pulses, acoustic or ultrasonic shockwaves or booms in the air, space, enclosed, or upon any object or mass, to be used solely or as part of a system, platform or device including weaponry and weather modification |
| CN207493431U (en) * | 2017-11-10 | 2018-06-15 | 青海超脑信息科技有限公司 | Haze system manually drops in a kind of solid sound source sound wave |
| CN109601212A (en) * | 2019-01-09 | 2019-04-12 | 四川万智沃达科技有限公司 | A kind of weather influence operational method, unmanned plane and computer readable storage medium based on unmanned plane |
| CN111610793A (en) * | 2019-02-26 | 2020-09-01 | 北京京东尚科信息技术有限公司 | Artificial rainfall method and device |
-
2020
- 2020-12-24 CN CN202011549511.0A patent/CN112602519B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157092A (en) * | 1996-02-13 | 1997-08-20 | 北京市西城区新开通用试验厂 | Voice exciting rainer |
| US20130015260A1 (en) * | 2004-10-07 | 2013-01-17 | David Joseph Schulte | Concept and model for utilizing high-frequency or radar or microwave producing or emitting devices to produce, effect, create or induce lightning or lightspeed or visible to naked eye electromagnetic pulse or pulses, acoustic or ultrasonic shockwaves or booms in the air, space, enclosed, or upon any object or mass, to be used solely or as part of a system, platform or device including weaponry and weather modification |
| JP3158195U (en) * | 2008-10-17 | 2010-03-25 | 完 森田 | Ecology processing computer Typhoon countermeasure aircraft |
| GB0900905D0 (en) * | 2009-01-20 | 2009-03-04 | Truman Malcolm I | Electrostatic rain cloud machine |
| CN207493431U (en) * | 2017-11-10 | 2018-06-15 | 青海超脑信息科技有限公司 | Haze system manually drops in a kind of solid sound source sound wave |
| CN109601212A (en) * | 2019-01-09 | 2019-04-12 | 四川万智沃达科技有限公司 | A kind of weather influence operational method, unmanned plane and computer readable storage medium based on unmanned plane |
| CN111610793A (en) * | 2019-02-26 | 2020-09-01 | 北京京东尚科信息技术有限公司 | Artificial rainfall method and device |
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