Hearing protectors - safety requirements and testing - part 7 : level - dependant ear - plugs 听力保护器.安全要求和试验.第7部分:声级相关的耳塞
Hearing protectors - safety requirements and testing - part 4 : level - dependent ear - muffs 听力保护器.安全要求和试验.第4部分:声级相关的耳罩
Hearing protectors - safety requirements and testing - part 5 : active noise reduction ear - muffs 听力保护器.安全要求和试验.第5部分:有源降噪耳罩
Acoustics . hearing protectors . part 1 : subjective method for the measurement of sound attenuation 声学.听力保护器.第1部分:声音衰减测量的主观方法
Hearing protectors - safety requirements and testing - part 6 : ear - muffs with electrical audio input 听力保护器.安全要求和试验.第6部分:带电子音频输入的耳罩
Hearing protectors - general requirements - part 3 : ear - muffs attached to an industrial safety helmet 听力保护器.一般要求.第3部分:固定在工业用安全头盔上的耳罩
Acoustics ; hearing protectors ; subjective method for the measurement of sound attenuation ; identical with iso 4869 - 1 : 1990 声学.听力保护器.第1部分:声衰减的主观测量法
Hearing protectors - safety requirements and testing - part 4 : level - dependent ear - muffs ; german version en 352 - 4 : 2001 a1 : 2005 听力保护器.安全要求和试验.第4部分:依据声级的耳机护
Hearing protectors - general requirements - part 3 : ear - muffs attached to an industrial safety helmet ; german version en 352 - 3 : 2002 听力保护器.一般要求.第3部分:固定在工业防护帽上的
