
Electroacoustics - Audio Frequency Induction Loop Systems For Assisted Hearing - Part 1: Methods Of Measuring And Specifying The Performance Of System Components
出版:Association Francaise de Normalisation

专家解读视频
Electroacoustics - Audio Frequency Induction Loop Systems For Assisted Hearing - Part 1: Methods Of Measuring And Specifying The Performance Of System Components
出版:Association Francaise de Normalisation
专家解读视频