
BS EN ISO 3743-1. Acoustics. Determination of sound power levels of noise sources. Engineering methods for small, movable sources in reverberant fields. Part 1. Comparison method for hard-walled test rooms
出版:British Standards Institution

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BS EN ISO 3743-1. Acoustics. Determination of sound power levels of noise sources. Engineering methods for small, movable sources in reverberant fields. Part 1. Comparison method for hard-walled test rooms
出版:British Standards Institution
专家解读视频