GB/T 6881.3-2002
声学 声压法测定噪声源声功率级 混响场中小型可移动声源工程法 第2部分;专用混响测试室法
Acoustics--Determination of sound power levels of noise sources-using sound pressure--Engineering metheds for small,movable sources in reverberant fields--Part 2: Methods for special reverberation test rooms
GBT6881.3-2002, GB6881.3-2002