Home / Standards / GB/T 7584.2-1999 GB/T 7584.2-1999 Active 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 Standard Type GBT ICS 13.340.20 CCS C71 Status 现行 Issue Date 1999-08-24 Implementation 2000-05-01 Responsible Dept 中国科学院 Drafting Unit N/A