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采用声学方法测量大气气流和湍流剖面的标准指南
Standard Guide for Measurement of Atmospheric Wind and Turbulence Profiles by Acoustic Means
参考页数:9P.;A4
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采用声学方法测量大气气流和湍流剖面的标准指南
Standard Guide for Measurement of Atmospheric Wind and Turbulence Profiles by Acoustic Means
参考页数:9P.;A4
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声学 消声器噪声控制指南
Acoustics - Guidelines for noise control by silencers
参考页数:44P.;A4
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声学 可移动声屏障声衰减的现场测量
Acoustics - Measurement of the in situ sound attenuation of a removable screen
参考页数:10P.;A4
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声学 采用隔声罩和隔声小室的噪声控制指南
Acoustics - Guidelines for noise control by enclosures and cabins
参考页数:50P.;A4
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声学 无气流管道消声器插入损失的测量 实验室测量法
Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method
参考页数:6P;A4
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声学.采用隔音罩和隔音室控制的噪音控制指南
Acoustics. Guidelines for noise control by enclosures and cabins
参考页数:62P.;A4
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声学.消音器噪声控制指南
Acoustics. Guidelines for noise control by silencers
参考页数:52P.;A4
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声学.声器的现场测量
Acoustics - Measurements on silencers in situ
参考页数:30P.;A4
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声学.可移动声屏障声衰减的现场测量
Acoustics - Measurement of the in situ sound attenuation of a removable screen
参考页数:20P.;A4
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