Acoustics - pure tone air conduction threshold audiometry - for hearing conservation purposes 声学纯音气导听阈测定听力保护用
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Specification for pure tone air conduction threshold audiometry for hearing conservation purposes 听力保护用纯音色空气传导阈值听力测定规范
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Acoustics . pure tone air conduction threshold audiometry for hearing conservation purposes 声学.为保护听力而进行的纯音空气传导阀值听力测定法
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Acoustics ; pure tone air conduction threshold audiometry for hearing conservation purposes identical with iso 6189 : 1983 ; german version en 26189 : 1991 声学.用于保护听觉的纯音调空气传导阈值的听力测定法