
BS EN 1793-1. Road traffic noise reducing devices. Test method for determining the acoustic performance. Part 1. Intrinsic characteristics of sound absorption
出版:British Standards Institution

專家解讀視頻
BS EN 1793-1. Road traffic noise reducing devices. Test method for determining the acoustic performance. Part 1. Intrinsic characteristics of sound absorption
出版:British Standards Institution
專家解讀視頻