www.bzfxw.comICS13.140CCSZ0521辽宁省地方标准DB21/T3946—2024交通运输噪声污染缓解工程技术规范隔声窗措施Technicalspecificationfortrafficnoisemitigationprojectmeasuresforsoundinsulationwindows2024-04-30发布2024-05-30实施辽宁省市场监督管理局发布www.bzfxw.comwww.bzfxw.comDB21/T3946—2024I目次前言..................................................................................II1范围...................
