ASTM E580/E580M-09a Standard Practice for Installation of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Subject to Earthquake Ground Motions
在遭受地震地区安装隔音砖和镶板用天花板吊顶系统的规程
[attach]72680[/attach] 作者: admin 时间: 2015-5-28 08:24:54