
Road Traffic Noise Reducing Devices - Test Method for Determining the Acoustic Performance Part 5: Intrinsic Characteristics - in Situ Values of Sound Reflection Under Direct Sound Field Conditions
出版:National Standards Authority of Ireland

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Road Traffic Noise Reducing Devices - Test Method for Determining the Acoustic Performance Part 5: Intrinsic Characteristics - in Situ Values of Sound Reflection Under Direct Sound Field Conditions
出版:National Standards Authority of Ireland
专家解读视频