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This "free air under the diaphragm" is not caused by gastrointestinal perforation. Don't be misdiagnosed.
Time of Update: 2021-04-19
It is only for medical professionals to read for reference. If you encounter "free air under the diaphragm", don't leak this cause! Free air under the diaphragm is an important imaging
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Common knowledge of coating: why do indoor air quality standards and specifications require
Time of Update: 2020-04-03
It is suggested that a certain amount of organic compounds, mainly including aromatic hydrocarbon, straight chain hydrocarbon, aldehyde, alcohol, ester and so on, will be emitted
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Air flow test in dust free workshop
Time of Update: 2019-08-01
How to test the air flow in the dust-free workshop? The air flow test in the dust-free workshop mainly includes: air flow pattern, air flow direction and air flow parallelism test
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Precautions for oil free air compressor
Time of Update: 2019-07-12
2. The user must set oil-free air compressor protective grounding wire to ensure good contact between all metal casings of the compressor and the ground, and the grounding resistance shall meet the national standard.
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Management principles and requirements of dust-free air shower room
Time of Update: 2016-03-16
Management principles and requirements of dust-free air shower room
Air shower room is a necessary dust removal and purification equipment for all kinds of production
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Management principles and requirements of dust-free air shower room
Time of Update: 2015-06-25
The air shower room is the necessary dust removal and purification equipment for all kinds of food and photoelectric industry, pharmaceutical factory, automobile, aerospace
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Working principle and related technical knowledge of silent oil-free air compressor
Time of Update: 2009-11-04
Silent oil-free air compressor working principle and related technical knowledge this technical article is collected and sorted out by Ruian Aite mechanical and Electrical Co., Ltd
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Application of environmental protection technology in oil free air compressor
Time of Update: 2009-07-30
According to the investigation of the application of environmental protection technology in oil-free air compressor, in less than 300 years of industrial process, human beings have
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Unscramble the parameters of silent oil-free air compressor
Time of Update: 2009-07-30
Now the parameters of silent oil-free air compressor are interpreted as follows, for the reference of users.
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How to choose silent oil-free air compressor correctly
Time of Update: 2009-07-30
How to choose the silent oil-free air compressor correctly because the silent oil-free air compressor adopts the oil-free self lubrication technology, so its core components piston
