GB/T 31004.3-2014 声学 建筑和建筑构件隔声声强法测量 第3部分:低频段的实验室测量 Acoustics—Measurement of sound insulation in buildings and of building elements using sound intensity—Part 3:Laboratory measurements at low frequencies
Acoustics—Measurement of sound insulation in buildings and of building elements using sound intensity—Part 3:Laboratory measurements at low frequencies