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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 7584.2-1999 |
Acoustics--Hearing protectors--Part 2:Estimation of effective A-weighted sound pressure levels when hearing protectors are worn 声学 护听器 第2部分:戴护听器时有效的A计权声压级估算 |
China National Standards 2:Estimation |
 English PDF |
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