Home / Standards / GB/T 17247.1-2000 GB/T 17247.1-2000 Active Acoustics--Attenuation of sound during propagation outdoors--Part 1:Calculation of the absorption of sound by the atmosphere 声学 户外声传播衰减 第1部分:大气声吸收的计算 Standard Type GBT ICS 17.140 CCS A59 Status 现行 Issue Date 2000-03-16 Implementation 2000-12-01 Responsible Dept 中国科学院 Drafting Unit 中国科学院