DIN EN 27574-4-1989 声学.测定和检验机器和设备规定噪声排放值的统计方法.第4部分:批量机器规定的简易:(等同采用 ISO 7574-4:1985);德文版本 EN 27574-4:1988
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