声学 确定和检验机器设备规定的噪声辐射值的统计学方法 第三部分:成批机器标牌值的确定和检验简易(过渡)法
Acoustics--Statistical methods for determining and verifying stated noise emission values of machinery and equipment--Part 3:Simple (transition) method for determining and verifying labelled values for batches of machines