DIN CEN/TS 1793-5:2003 道路交通减噪装置.声音性能测试方法.第5部分:内在特性.声音反射和气载噪声隔绝现场测定值
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics; In situ values of sound reflection and airborne sound insulation; German version CEN/TS 1793-5:2003