Hearing aids - hearing aids with induction pick - up coil input 助听器.有感应线圈输入助听器
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Hearing aids . part 1 : hearing aids with induction pick - up coil input 助听器.第1部分:感应拾音线圈输入的助听器
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Hearing aids - part 1 : hearing aids with induction pick - up coil input 助听器.第1部分:有感应接收线圈输入的助听器
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Measurement of electroacoustical characteristics of hearing aids with induction pick - up coil input 具有感应拾音线圈输入的助听器电声特性的测量方法
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Hearing aids - part 1 : hearing aids with induction pick - up coil input iec 60118 - 1 : 1995 a1 : 1998 ; german version en 60118 - 1 : 1995 a1 : 1998 助听器.第1部分:带感应耦合线圈输入的助听器iec 60