Road traffic noise reducing devices. Test method for determining the acoustic performance-Intrinsic characteristics. In situ values of sound diffraction
道路交通降噪装置 测定声学性能的试验方法
Cross References:EN 1793-3EN 1793-6EN 61672-1EN ISO 354ISO 354ISO/IEC Guide 98EN 1793-1CEN/TS 1793-5IEC 60942IEC 61260All current amendments available at time of purchase are included with the purchase of this document.