NS EN 1793-4:2015現行
Road Traffic Noise Reducing Devices - Test Method For Determining The Acoustic Performance - Part 4: Intrinsic Characteristics - In Situ Values Of Sound Diffraction
出版：Norwegian Standards (Norges Standardiseringsforbund)
專家解讀視頻
基本信息
標準編號： NS EN 1793-4:2015
發布時間：2015/6/1 0:00:00
標準類別：Standard
出版單位：Norwegian Standards (Norges Standardiseringsforbund)
標準頁數：40
標準簡介
Explains a test method for determining the intrinsic characteristics of sound diffraction of added devices installed on the top of traffic noise reducing devices.
等同采用的國際標準
EN 1793-4:2015 - Identical
