
Road Traffic Noise Reducing Devices - Test Method For Determining The Acoustic Performance - Part 4: Intrinsic Characteristics - In Situ Values Of Sound Diffraction
出版:Danish Standards

專家解讀視頻
Road Traffic Noise Reducing Devices - Test Method For Determining The Acoustic Performance - Part 4: Intrinsic Characteristics - In Situ Values Of Sound Diffraction
出版:Danish Standards
專家解讀視頻