Home / Standards / GB/T 3239-1982 GB/T 3239-1982 Active Expression of physical and subjective magnitudes of sound and noise in air 空气中声和噪声强弱的主观和客观表示法 Standard Type GBT ICS 13.140 CCS A41 Status 现行 Issue Date 1982-06-08 Implementation 1983-07-01 Responsible Dept 中国科学院 Drafting Unit N/A