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	GB/T 17249.3-2012 Acoustics - Recommended practice for the design of low-noise workplaces containing machinery - Part 3: Sound propagation and noise prediction in workrooms 声学低噪声工作场所设计指南第3部分：工作间内的声传播和噪声预测 - 英文版
	GB/T 25078.2-2010 Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 2: Introduction to the physics of low noise design 声学低噪声机器和设备设计实施建议第2部分：低噪声设计的物理基础 - 英文版
	GB/T 25078.1-2010 Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 1: Planning 声学低噪声机器和设备设计实施建议第1部分：规划 - 英文版

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