CN115874727A - Toilet's physics falls device of making an uproar - Google Patents

Toilet's physics falls device of making an uproar Download PDF

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Publication number
CN115874727A
CN115874727A CN202211494833.9A CN202211494833A CN115874727A CN 115874727 A CN115874727 A CN 115874727A CN 202211494833 A CN202211494833 A CN 202211494833A CN 115874727 A CN115874727 A CN 115874727A
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China
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noise reduction
sound
sound absorption
noise
clean room
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CN202211494833.9A
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CN115874727B (en
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邵建鑫
柯美样
陈松奇
王真
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Shenghui System Integration Group Co ltd
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Shenghui System Integration Group Co ltd
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Abstract

The invention discloses a physical noise reduction device for a clean room, which relates to the technical field of noise reduction of the clean room and comprises a building column and a floor slab between the upper end and the lower end of the building column, wherein the clean room is formed between the building column and the floor slab, wall plate boxes are arranged on the periphery of the inner wall of the clean room, noise reduction structures are arranged on the inner wall of the wall plate box, an air pipe is arranged at the top of the wall plate box, and a sound absorption mechanism is arranged in the building column; the noise reduction structure is formed by splicing a plurality of noise reduction plates; a noise reduction assembly is vertically arranged inside the radio strip groove; the wall board box is matched with the noise reduction structure and the sound absorption mechanism, so that the equipment noise and the wind noise generated in the clean room during clean operation can be synchronously reduced, the noise can be conveniently subjected to noise reduction treatment for many times, the noise is prevented from generating echo in the clean room, and the noise with different frequencies, such as low, medium and high, can be synchronously reduced; the noise control effect of the clean room in use is improved, so that the physical noise reduction effect of the clean room is greatly improved.

Description

Toilet's physics falls device of making an uproar
Technical Field
The invention relates to the technical field of clean room noise reduction, in particular to a clean room physical noise reduction device.
Background
A clean room is a room in which the concentration of airborne particles is controlled. Its construction and use should reduce the indoor induction, generation and retention of particles. Other relevant parameters such as temperature, humidity, pressure and the like in the room are controlled according to requirements. The clean room is a special room, and parameters such as air suspended particle concentration, air temperature, humidity, pressure and the like in the room need to be controlled. And it should reduce the attraction, generation and retention of particles. The method needs to be realized by the combined action of good air flow organization, effective pressure difference control, clean room shape and decoration materials which meet the process requirements, skillful construction technology, scientific operation management and the like;
the existing noise reduction device for the clean room is generally formed by plates or bricks with the noise reduction function, and the plates or bricks with the noise reduction function are generally made of gap type sound absorption materials; however, the existing sound absorption and noise reduction principle is that the sound reflection of a smooth surface is reduced by utilizing the porous structure of a sound absorption material, so that the noise reduction is realized; however, it is inconvenient to perform processing operation layer by layer in a grading manner according to different noise frequencies, and meanwhile, the noise cannot be dispersed and then diffused and denoised during transmission; therefore, there is a need for an improved approach to the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a clean room physical noise reduction device.
In order to achieve the purpose, the invention adopts the following technical scheme: a physical noise reduction device for a clean room comprises a building column and a floor slab between the upper end and the lower end of the building column, wherein the clean room is formed between the building column and the floor slab, wall plate boxes are arranged on the periphery of the inner wall of the clean room, noise reduction structures are arranged on the inner wall of the wall plate boxes, a plurality of air pipes are arranged at the tops of the wall plate boxes in a penetrating manner, fans are arranged in the air pipes, and sound absorption mechanisms for absorbing noise are arranged in the building column;
the noise reduction structure is formed by splicing a plurality of noise reduction plates, and the noise reduction plates positioned at the corners in the wall plate box are in a right-angle plate shape; the lower part of the lapping part at the rear end of the noise reduction plate and the upper part of the lapping part at the front end are fixedly connected with buckling strips with the same length, arc-shaped strips are protruded out of the lapping ends of the buckling strips, and arc-shaped strip grooves matched with the arc-shaped strips are sunken in the lapping ends of the buckling strips; the sound absorption structure comprises a noise reduction plate, a resonance sound absorption structure layer, a sound absorption panel, a plurality of sound reception strip grooves, a sound absorption panel and a sound absorption panel, wherein the outer side surface of the noise reduction plate is pasted with a porous sound absorption plate, the inner side surface of the noise reduction plate is pasted with the resonance sound absorption structure layer, the inner side surface of the resonance sound absorption structure layer is provided with the sound absorption panel, the inner side surface of the sound absorption panel is vertically provided with the sound reception strip grooves at equal intervals, the inner ends of the sound reception strip grooves are cylindrical, and the outer ends of the sound reception strip grooves are rectangular and open; the inside vertical subassembly of making an uproar that falls that is used for noise dispersion to reduce that is equipped with of radio strip groove.
Preferably, the sound absorption mechanism comprises a sound absorption cavity arranged inside the building column, a plurality of reinforcing and spacing blocks arranged inside the sound absorption cavity, a sound absorption plate vertically and fixedly connected between the reinforcing and spacing blocks, and a corrugated sound absorption plate vertically arranged inside the sound absorption cavities at two sides of the sound absorption plate, wherein a honeycomb-shaped sound absorption cavity is formed inside the corrugated sound absorption plate; the both ends of ripple abatvoix all the rigid coupling have the radio reception ring canal, the inside equidistance of radio reception ring canal is seted up the leading sound hole with honeycomb sound-absorbing chamber intercommunication.
Preferably, arc-shaped turning plates are arranged at corners between the noise reduction structure and the wall plate box, sound receiving antifouling plates are fixedly connected between the arc-shaped turning plates, and hexagonal sound passing holes are uniformly formed in the surfaces of the sound receiving antifouling plates; the sound-receiving antifouling plate is a perforated plate type resonance sound absorption structure.
Preferably, the subassembly of making an uproar falls including the vertical pipe of making an uproar that falls of locating radio strip inslot end, vertical equidistance level locate the inside a plurality of plectanes of making an uproar that fall of the intraduct, set up the single heart of falling the plectane surface of making an uproar and gradually stretch the spiral form spiral line shape and fall the spiral line mouth of making an uproar, the outer end internally mounted of spiral line mouth of making an uproar falls the shell fragment of making an uproar.
Preferably, the outer wall of the pipe body of the noise reduction pipe facing the opening of the sound receiving strip groove is provided with a sound guide strip opening, the peripheral side of the outer wall of the noise reduction pipe is fixedly connected with a plurality of sound scattering resonance plates which are expanded outwards, and the sound scattering resonance plates are embedded inside the sound absorbing panel.
Preferably, the sound-receiving antifouling plates on the inner top surface of the wallboard box are provided with through holes communicated with the air pipe, and the air pipe is communicated with an external air supply pipe.
Compared with the prior art, the invention has the beneficial effects that: the wall board box is matched with the noise reduction structure and the sound absorption mechanism, so that the equipment noise and the wind noise generated in the clean operation in the clean room can be synchronously reduced, the noise can be conveniently subjected to noise reduction treatment for multiple times, the sound insulation effect of the clean room is improved, the noise can be subjected to frequency reduction treatment, the noise can be prevented from generating echo in the clean room, and the noise with different frequencies, such as low frequency, medium frequency and high frequency, can be synchronously subjected to sound reception, sound absorption, dispersion and noise reduction treatment; the noise prevention effect of the clean room is improved when the clean room is used, and the sound absorption capacity and the sound absorption coefficient of the clean room can be improved; the outside noise can be effectively prevented from entering the clean room, so that the physical noise reduction effect on the clean room is greatly improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a front sectional view of the present invention;
FIG. 3 is a schematic view of the connection state of the noise reduction plate according to the present invention;
FIG. 4 is a schematic cross-sectional view of a portion of the noise reduction panel of the present invention;
FIG. 5 is a schematic perspective view of a noise reduction tube and a noise reduction circular plate according to the present invention;
FIG. 6 is a schematic view of a three-dimensional unfolding structure of a noise reduction circular plate and a noise reduction elastic sheet according to the present invention;
FIG. 7 is a schematic view of the connection structure of the corrugated sound-absorbing plate and the sound-receiving ring tube of the present invention;
fig. 8 is a top view of the sound receiving grommet of the present invention.
Sequence numbers in the figure: 1. building columns; 2. a floor slab; 3. a wallboard case; 4. a noise reduction structure; 5. an air duct; 6. a fan; 7. reinforcing the spacer blocks; 8. a sound-absorbing panel; 9. a corrugated acoustic panel; 10. a reception ring pipe; 11. an arc-shaped crutch plate; 12. a radio reception antifouling board; 401. a noise reduction plate; 402. a porous sound absorbing panel; 403. a fastening strip; 404. a resonance sound absorption structural layer; 405. a sound absorbing panel; 406. a noise reduction tube; 407. a noise reduction circular plate; 408. a noise reduction shrapnel; 409. a sound diffusing resonance plate.
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.
Example (b): referring to fig. 1 to 8, a physical noise reduction device for a clean room comprises a building column 1 and a floor slab 2 between the upper end and the lower end of the building column 1, the clean room is formed between the building column 1 and the floor slab 2, wall plate boxes 3 are arranged around the inner wall of the clean room, noise reduction structures 4 are arranged on the inner walls of the wall plate boxes 3, a plurality of air pipes 5 are arranged at the tops of the wall plate boxes 3 in a penetrating manner, fans 6 are arranged in the air pipes 5, and sound absorption mechanisms for absorbing noise are arranged in the building column 1; the noise reduction structure 4 is formed by splicing a plurality of noise reduction plates 401, and the noise reduction plates 401 positioned at the inner corners of the wallboard box 3 are in a right-angle plate shape; the lower part of the lapping part at the rear end and the upper part of the lapping part at the front end of the noise reduction plate 401 are fixedly connected with buckling strips 403 with the same length, arc-shaped strips are protruded outside the lapping ends of the buckling strips 403, and arc-shaped strip grooves matched with the arc-shaped strips are recessed inside the lapping ends of the buckling strips 403; the outer side surface of the noise reduction plate 401 is pasted with a porous sound absorption plate 402, the inner side surface of the noise reduction plate 401 is pasted with a resonance sound absorption structure layer 404, the inner side surface of the resonance sound absorption structure layer 404 is provided with a sound absorption panel 405, the inner side surface of the sound absorption panel 405 is vertically provided with a plurality of sound reception strip grooves at equal intervals, the inner ends of the sound reception strip grooves are cylindrical, and the outer ends of the sound reception strip grooves are rectangular open; a noise reduction assembly for reducing noise dispersion is vertically arranged in the sound receiving strip groove; through the matching of the wallboard box 3, the noise reduction structure 4 and the sound absorption mechanism, the equipment noise and the wind noise generated in the clean operation in the clean room can be synchronously reduced and reduced, the noise can be conveniently subjected to noise reduction treatment for multiple times, the sound insulation effect of the clean room is improved, the noise can be prevented from generating echo in the clean room, and the noise with different frequencies, such as low, medium and high, can be synchronously received, absorbed, dispersed and reduced; the noise prevention effect of the clean room is improved when the clean room is used, and the sound absorption capacity and the sound absorption coefficient of the clean room can be improved; the outside noise can be effectively prevented from entering the clean room, so that the physical noise reduction effect on the clean room is greatly improved.
In the invention, the sound absorption mechanism comprises a sound absorption cavity arranged in the building column 1, a plurality of reinforcing partition blocks 7 arranged in the sound absorption cavity, a sound absorption plate 8 vertically and fixedly connected between the reinforcing partition blocks 7 and corrugated sound absorption plates 9 vertically arranged in the sound absorption cavities at two sides of the sound absorption plate 8, and as the corrugated sound absorption plates 9 have high fireproof performance and good heat insulation performance, the fireproof grade reaches B1 grade and the flame retardant performance is achieved; the noise reduction and sound insulation effects of the building columns 1 can be improved, and the honeycomb-shaped sound absorption cavity is formed in the corrugated sound absorption plate 9; two ends of the corrugated sound-absorbing plate 9 are fixedly connected with a sound-receiving ring pipe 10, and sound guide holes communicated with the honeycomb sound-absorbing cavity are equidistantly formed in the sound-receiving ring pipe 10; arc-shaped turning plates 11 are arranged at the corners between the noise reduction structure 4 and the wall plate box 3, sound-receiving antifouling plates 12 are fixedly connected between the arc-shaped turning plates 11, and hexagonal sound passing holes are uniformly formed in the surfaces of the sound-receiving antifouling plates 12; the sound-receiving and dirt-preventing plate 12 is a perforated plate type resonance sound-absorbing structure.
In the invention, the noise reduction assembly comprises a noise reduction pipe 406 vertically arranged at the inner end of the sound receiving strip groove, a plurality of noise reduction circular plates 407 vertically and equidistantly horizontally arranged in the noise reduction pipe 406, and a single-core gradually-extending spiral noise reduction screw port arranged on the surface of the noise reduction circular plate 407, wherein a spiral noise reduction elastic sheet 408 is arranged in the outer end of the noise reduction screw port; a sound guide strip opening is formed in the outer wall of the pipe body, facing the opening of the sound receiving strip groove, of the noise reduction pipe 406, a plurality of sound scattering resonance plates 409 which are outwards unfolded are fixedly connected to the periphery side of the outer wall of the noise reduction pipe 406, and the sound scattering resonance plates 409 are embedded in the sound absorption panel 405; the sound-receiving antifouling plates 12 on the inner top surface of the wallboard box 3 are all provided with through holes communicated with the air pipe 5, and the air pipe 5 is communicated with an external air supply pipe; after the noise passes through the screw line mouth of making an uproar that falls, can carry out the decibel of four to the noise through the shell fragment 408 of making an uproar that falls and cut down, when the noise transmits once more through falling the noise pipe 406, be convenient for to inhale the inside diffusion of sound panel 405 through scattered sound resonance board 409 on falling the noise pipe 406, and then play further noise reduction to the noise and handle the effect.
The working principle is as follows: in this embodiment, the present invention further provides a method for using a clean room physical noise reduction device, including the following steps:
firstly, installing a wallboard box 3 in a clean room formed by a building column 1 and a floor slab 2, then installing an air pipe 5 with a fan 6 in the wallboard box 3, fixedly communicating the fan 6 with external control equipment, then installing noise reduction structures 4 on the inner walls around the wallboard box 3, fixing arc-shaped bent plates 11 at the corners of the wallboard box 3, and simultaneously fixing sound-receiving and anti-fouling plates 12 between the arc-shaped bent plates 11;
secondly, when the fan 6 is started to blow air to a user entering the clean room, noise generated when the fan 6 is started is transmitted inside the wall plate box 3, primary noise decibel absorption can be performed when the noise is in primary contact with the sound-receiving antifouling plate 12, then the noise passes through the sound-receiving antifouling plate 12 and is in contact with the sound-absorbing panel 405 on the inner side surface of the noise-reducing plate 401, secondary noise can be absorbed conveniently through the sound-absorbing panel 405, and meanwhile, part of the noise enters the noise-reducing pipe 406 through the sound-receiving strip grooves;
step three, after the noise enters the interior of the noise reduction pipe 406, when the noise passes through the noise reduction circular plate 407, noise reduction and sound absorption for three times are facilitated through a noise reduction screw thread opening on the noise reduction circular plate 407, meanwhile, when the noise passes through a noise reduction elastic sheet 408 inside the noise reduction screw thread opening, the bottom end of the noise reduction elastic sheet 408 inside the noise reduction screw thread opening is stretched downwards under the action of gravity, further, after the noise passes through the noise reduction screw thread opening, decibel reduction for four times is performed on the noise through the noise reduction elastic sheet 408, when the noise is transmitted again through the noise reduction pipe 406, the noise is conveniently diffused into the interior of the sound absorption panel 405 through the sound scattering resonance plate 409 on the noise reduction pipe 406, and further noise reduction treatment effect is achieved on the noise;
after the noise passes through the sound absorption panel 405, when the noise passes through the resonance sound absorption structure layer 404, the noise is subjected to secondary noise reduction treatment, meanwhile, the resonance sound absorption structure layer 404 has a strong frequency sound absorption effect due to the fact that the resonance sound absorption structure layer 404 is a sound absorption structure consisting of a perforated plate and a backing cavity, after the noise is heard through the noise reduction plate 401, the noise is subjected to sound absorption and noise reduction treatment through the porous sound absorption plate 402, and meanwhile, the middle-high frequency noise can be effectively absorbed;
and step five, after the noise passes through the noise reduction structure 4, the noise enters the interior of the building column 1, and the noise in the clean room can be finally absorbed and reduced through the sound absorption mechanism in the building column 1, so that the noise can be completely reduced and eliminated.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (6)

1. The utility model provides a device of making an uproar falls in toilet physics, includes floor (2) between the lower extreme on building post (1) and building post (1), its characterized in that: a clean room is formed between the building column (1) and the floor slab (2), the wall plate boxes (3) are mounted on the periphery of the inner wall of the clean room, noise reduction structures (4) are arranged on the inner walls of the wall plate boxes (3), a plurality of air pipes (5) penetrate through the tops of the wall plate boxes (3), fans (6) are mounted inside the air pipes (5), and sound absorption mechanisms for absorbing noise are mounted inside the building column (1);
the noise reduction structure (4) is formed by splicing a plurality of noise reduction plates (401), and the noise reduction plates (401) positioned at the corners inside the wallboard box (3) are in a right-angle plate shape; the lower part of the rear end overlapping part and the upper part of the front end overlapping part of the noise reduction plate (401) are fixedly connected with fastening strips (403) with the same length, arc strips are protruded outside the overlapping ends of the fastening strips (403), and arc strip grooves matched with the arc strips are sunken inside the overlapping ends of the fastening strips (403); the noise reduction structure is characterized in that a porous sound absorption plate (402) is attached to the outer side surface of the noise reduction plate (401), a resonance sound absorption structure layer (404) is attached to the inner side surface of the noise reduction plate (401), a sound absorption panel (405) is arranged on the inner side surface of the resonance sound absorption structure layer (404), a plurality of sound absorption strip grooves are vertically formed in the inner side surface of the sound absorption panel (405) at equal intervals, the inner ends of the sound absorption strip grooves are cylindrical, and the outer ends of the sound absorption strip grooves are rectangular and open; the inside vertical subassembly of making an uproar that falls that is used for noise dispersion to reduce that is equipped with of radio strip groove.
2. A clean room physical noise reduction device according to claim 1, characterized in that: the sound absorption mechanism comprises a sound absorption cavity arranged in the building column (1), a plurality of reinforcing spacer blocks (7) arranged in the sound absorption cavity, sound absorption plates (8) vertically and fixedly connected between the reinforcing spacer blocks (7) and corrugated sound absorption plates (9) vertically arranged in the sound absorption cavities at two sides of the sound absorption plates (8), and a honeycomb-shaped sound absorption cavity is formed in each corrugated sound absorption plate (9); the two ends of the corrugated sound-absorbing board (9) are fixedly connected with a sound-receiving ring pipe (10), and sound guide holes communicated with the honeycomb sound-absorbing cavity are formed in the sound-receiving ring pipe (10) at equal intervals.
3. A physical noise reducing device for clean rooms according to claim 2, characterized in that: arc-shaped turning plates (11) are arranged at corners between the noise reduction structure (4) and the wall plate box (3), sound reception antifouling plates (12) are fixedly connected between the arc-shaped turning plates (11), and hexagonal sound passing holes are uniformly formed in the surfaces of the sound reception antifouling plates (12); the sound-receiving and dirt-preventing plate (12) is a perforated plate type resonance sound-absorbing structure.
4. The physical noise reduction device for clean rooms of claim 1, wherein: the noise reduction assembly comprises a noise reduction pipe (406) vertically arranged at the inner end of the sound receiving strip groove, a plurality of noise reduction circular plates (407) horizontally arranged inside the noise reduction pipe (406) at equal intervals, and a single-core gradually-extending spiral noise reduction screw port arranged on the surface of each noise reduction circular plate (407), wherein a spiral noise reduction elastic sheet (408) is arranged inside the outer end of each noise reduction screw port.
5. The physical noise reduction device for clean rooms of claim 4, wherein: make an uproar pipe (406) and seted up leading sound strip mouth on the body outer wall of the uncovered department of radio strip groove, the equal rigid coupling in outer wall week side of making an uproar pipe (406) has scattered sound resonance board (409) of multi-disc outside expansion, scattered sound resonance board (409) are inlayed and are established and are being inhaled inside sound panel (405).
6. A clean room physical noise reduction device according to claim 1, characterized in that: the sound-receiving antifouling plate (12) on the inner top surface of the wallboard box (3) is provided with through holes communicated with the air pipe (5), and the air pipe (5) is communicated with an external air supply pipe.
CN202211494833.9A 2022-11-26 2022-11-26 Clean room physical noise reduction device Active CN115874727B (en)

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CN202211494833.9A CN115874727B (en) 2022-11-26 2022-11-26 Clean room physical noise reduction device

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CN202211494833.9A CN115874727B (en) 2022-11-26 2022-11-26 Clean room physical noise reduction device

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CN115874727B CN115874727B (en) 2023-10-13

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5631075A (en) * 1994-03-23 1997-05-20 Nihon Cement Co., Ltd. Heat-insulating panel serving as concrete form
CN209384665U (en) * 2018-12-20 2019-09-13 天津泰达森然工程咨询有限公司 A kind of construction site denoising device easy to install
CN209444626U (en) * 2019-01-07 2019-09-27 鹤壁市隆盛环保矿山设备有限公司 A kind of main fan noise eliminating silencer
CN111396956A (en) * 2020-05-07 2020-07-10 合肥柏隆科技发展有限公司 Range hood with vibration/noise reduction structure
CN214574790U (en) * 2021-04-20 2021-11-02 济南润德医用工程有限公司 Toilet's physics falls device of making an uproar
CN216973800U (en) * 2022-02-23 2022-07-15 深圳市睿维盛环保科技有限公司 Noise reduction device for container type engine laboratory

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5631075A (en) * 1994-03-23 1997-05-20 Nihon Cement Co., Ltd. Heat-insulating panel serving as concrete form
CN209384665U (en) * 2018-12-20 2019-09-13 天津泰达森然工程咨询有限公司 A kind of construction site denoising device easy to install
CN209444626U (en) * 2019-01-07 2019-09-27 鹤壁市隆盛环保矿山设备有限公司 A kind of main fan noise eliminating silencer
CN111396956A (en) * 2020-05-07 2020-07-10 合肥柏隆科技发展有限公司 Range hood with vibration/noise reduction structure
CN214574790U (en) * 2021-04-20 2021-11-02 济南润德医用工程有限公司 Toilet's physics falls device of making an uproar
CN216973800U (en) * 2022-02-23 2022-07-15 深圳市睿维盛环保科技有限公司 Noise reduction device for container type engine laboratory

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
黄志平;朱敬燕;杨春;: "船舶舱室噪声控制设计措施", 中国水运(下半月), no. 09, pages 23 - 25 *

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