
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

專家解讀視頻
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
專家解讀視頻