steel-lattice rigid frame

例句：

1. 1.The steel lattice frame of the bridge is strong and durable.
   这座桥的钢格构框架结构坚固耐用。
2. 2. The engineer designed a steel lattice frame for the building.
   工程师为这座建筑设计了一个钢格构框架。
3. 3.The steel lattice frame provides excellent support for the roof.
   钢格构框架为屋顶提供了极好的支撑。