GB/T 39526-2020建筑幕墙空气声隔声性能分级及检测方法标准
英文:Classification and test method for airborne sound insulation performance of curtain wall GB/T 39526-2020介绍: 国家标准《建筑幕墙...
英文:Classification and test method for airborne sound insulation performance of curtain wall GB/T 39526-2020介绍: 国家标准《建筑幕墙...