Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 7584.1-2004 |
Acoustics--Hearing protectors--Part 1:Subjective method for the measurement of sound attenuation 声学 护听器 第1部分:声衰减测量的主观方法 |
China National Standards 1:Subjective |
English PDF |
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