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Chinese Standard: GB/T 6881.2-2017

Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Engineering methods for small movable sources in reverberant fields—Comparison method for a hard-walled test room

IDT  ISO 3743-1:2010

全国声学标准化技术委员会(SAC/TC 17)

This standard is the original Chinese electronic standard.
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