Audiometers - part 2 : equipment for speech audiometry iec 60645 - 2 : 1993 ; german version en 60645 - 2 : 1997 听力计.第2部分:语言测听装置
Audiometers - auditory test signals of short duration for audiometric and neuro - otological purposes 听力计.第3部分:声学和耳神经学用短持续试验信号
Audiometers - part 4 : equipment for extended high - frequency audiometry iec 60645 - 4 : 1994 ; german version en 60645 - 4 : 1995 听力计.第4部分:高频声学设备
Audiometers - part 3 : auditory test signals of short duration for audiometric and neuro - otological purposes 听力计.第3部分:声学和耳神经学用短持续试验信号
Specification for artificial mastoids for the calibration of bone vibrators used in hearing aids and audiometers 助听器及听力计中骨传导振动器校准用仿真乳突规范
Audiometers . part 3 : auditory test signals of short duration for audiometric and neuro - otological purposes 听力计第三部分:用于测听与神经耳科的短持续听觉测试信号
Audiometers . part 3 : auditory test signals of short duration for audiometric and neuro - otological purposes 听力计.第3部分:听力测定和神经耳科用短时持续听觉试验信号
Iec 6 electroacoustics - audiological equipment - part 1 : pure - tone audiometers iec 60645 - 1 : 2001 ; german version en 60645 - 1 : 2001 电声学.听觉病矫治学设备.第1部分:纯音测听计
Audiometers - part 3 : auditory test signals of short duration for audiometric and neuro - otological purposes iec 60645 - 3 : 1994 ; german version en 60645 - 3 : 1995 听力计.第3部分:声学和耳神经学用短持续试验信号
