English roof truss

例句：

1. 1. Theconstruction of the new bridge required the installation of a new English roof truss system.
   建造新桥需要安装新的英式屋顶桁架系统。
2. 2.The engineer designed the roof truss to support the weight of the building.
   工程师设计了屋顶桁架来支撑建筑物的重量。
3. 3.The company specializes in the manufacture and installation of English roof truss systems for commercial buildings.
   该公司专门从事商业建筑的英式屋顶桁架系统的制造和安装。