
Electroacoustics - Hearing Aids - Part 4: Induction-Loop Systems For Hearing Aid Purposes - System Performance Requirements
出版:Nederlands Normalisatie Instituut

专家解读视频
Electroacoustics - Hearing Aids - Part 4: Induction-Loop Systems For Hearing Aid Purposes - System Performance Requirements
出版:Nederlands Normalisatie Instituut
专家解读视频