
BS EN 60118-4 ED.3 - ELECTROACOUSTICS - HEARING AIDS - PART 4: INDUCTION LOOP SYSTEMS FOR HEARING AID PURPOSES - SYSTEM PERFORMANCE REQUIREMENTS
出版:British Standards Institution

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BS EN 60118-4 ED.3 - ELECTROACOUSTICS - HEARING AIDS - PART 4: INDUCTION LOOP SYSTEMS FOR HEARING AID PURPOSES - SYSTEM PERFORMANCE REQUIREMENTS
出版:British Standards Institution
专家解读视频