
ELECTROACOUSTICS - AUDIO-FREQUENCY INDUCTION LOOP SYSTEMS FOR ASSISTED HEARING - PART 1: METHODS OF MEASURING AND SPECIFYING THE PERFORMANCE OF SYSTEM COMPONENTS (IEC 62489-1:2010/A2:2017)
出版:European Committee for Standards - Electrical

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ELECTROACOUSTICS - AUDIO-FREQUENCY INDUCTION LOOP SYSTEMS FOR ASSISTED HEARING - PART 1: METHODS OF MEASURING AND SPECIFYING THE PERFORMANCE OF SYSTEM COMPONENTS (IEC 62489-1:2010/A2:2017)
出版:European Committee for Standards - Electrical
专家解读视频