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Chinese Standard: GB/T 4129-2003

Acoustics—Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels

IDT  ISO 6926:1999

全国声学标准化技术委员会

This standard is the original Chinese electronic standard.
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If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.

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