GB/T 3768-2017声学声压法测定噪声源声功率级和声能量级采用反射面上方包络测量面的简易法国家标准
英文:Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey me...
英文:Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey me...