Acoustics; statistical methods for determining and verifying stated noise emission values of machinery and equipment - Part 4: Methods for stated values for batches of machines; (Identical with ISO 7574-4:1985) German version EN 27574-4:1988
声学确定和验证机械和设备规定噪声排放值的统计方法;第4部分:批量机器规定值的方法;(与ISO 7574-4:1985相同);德文版EN 27574-4:1988