GB/T 6881.2-2002
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1部分;硬壁测试室比较法
Acoustics--Determination of sound power levels of noise soures--Engineering methods for small,movable sources in reverberant field--Part 1: Comparsion method for hard-walled test rooms
GBT6881.2-2002, GB6881.2-2002