China Acoustics—Descriptio GB Standards Search Result

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	GB/T 3222.2-2022 Acoustics—Description, measurement and assessment of environmental noise—Part 2: Determination of sound pressure levels 声学环境噪声的描述、测量与评价第2部分：声压级测定 - 英文版
	GB/T 3222.1-2022 Acoustics—Description, measurement and assessment of environmental noise—Part 1: Basic quantities and assessment procedures 声学环境噪声的描述、测量与评价第1部分：基本参量与评价方法 - 英文版

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