
Road Traffic Noise Reducing Devices - Test Method for Determining the Acoustic Performance Part 4: Intrinsic Characteristics - in Situ Values of Sound Diffraction
出版:National Standards Authority of Ireland

专家解读视频
Road Traffic Noise Reducing Devices - Test Method for Determining the Acoustic Performance Part 4: Intrinsic Characteristics - in Situ Values of Sound Diffraction
出版:National Standards Authority of Ireland
专家解读视频