
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
出版:Italian Standards

专家解读视频
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
出版:Italian Standards
专家解读视频