nzs 6802 1999 acoustics assessment of environmenta
声学 - 环境噪声的评估
Acoustics – Assessment of Environmental Noise
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Acoustics – Assessment of Environmental Noise
Reciprocating internal combustion engine driven alternating current generating sets — Part 10: Measurement of airborne noise by the enveloping surface method
Acoustics - Determination of sound power levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane
International Electrotechnical Vocabulary Chapter 801: Acoustics and electroacoustics
International Electrotechnical Vocabulary - Chapter 561: Piezoelectric devices for frequency control and selection - Section 561-07: Characteristics of surface acoustic wave (saw) devices