DIN EN 16272-3-1
Railway applications - Infrastructure - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 3-1: Normalized railway noise spectrum and single number ratings for diffuse sound field applications
现行
发布日期 :
2001-02-01
实施日期 :
DIN ISO 230-5
Test code for machine tools - Part 5: Determination of the noise emission (ISO 230-5:2000)
现行
发布日期 :
2001-03-01
实施日期 :