precast reinforced concrete framed support

例句：

1. 1.The construction company used precast concrete to build the bridge.
   这家建筑公司使用预制混凝土建造了这座桥。
2. 2. The precast beams were installed in the floor before the walls were erected.
   在墙体安装之前，先在地板上安装了预制梁。
3. 3.Precast concrete is durable and easy to maintain, making it a popular choice for building projects.
   预制混凝土耐用且易于维护，使其成为建筑项目的首选材料。