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GB/T 8485-2008
The graduation and test for airborne sound insulating properties of windows and doors
建筑门窗空气声隔声性能分级及检测方法 - 英文版
GB/T 16731-1997
The graduation of sound absorption propertyfor absorbent products
建筑吸声产品的吸声性能分级 - 英文版

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