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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 - 中英文版 |
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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 - 中英文版 |
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