美利体育登录入口官网:BS EN ISO 140-11:2005
声学.建筑物和建筑构件的隔声测量.轻型标准楼板上地板覆盖物传递冲击声音降低的实验室测量
Acoustics - Measurement of sound insulation in buildings and of building elements - Laboratory measurements of the reduction of transmitted impact sound by floor coverings on lightweight reference floors