I.S. EN CEN TS 1793-4:2004被替代
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
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基本信息
标准编号： I.S. EN CEN TS 1793-4:2004
发布时间：2004/4/21 0:00:00
标准类别：TechnicalSpecification
出版单位：National Standards Authority of Ireland
标准页数：31
标准简介
Describes a test method for determining the intrinsic characteristics of sound diffraction of added devices installed on the top of traffic noise reducing devices.
