标准查询 标准查询建筑声学.从建筑构件性能评定建筑物声学性能.第1部分:房间之间的空气声隔绝
Building acoustics - Estimation of acoustic performance of buildings from the performance of elements - Part 1: Airborne sound insulation between rooms
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标准查询Building acoustics - Estimation of acoustic performance of buildings from the performance of elements - Part 1: Airborne sound insulation between rooms
