rigid-frame beam

例句：

1. 1.The engineer designed a rigid frame beam tosupport the building's weight.
   工程师设计了一个刚性框架梁来支撑建筑物的重量。
2. 2. Theconstruction crew used a rigid frame beam toreinforce the foundation of the new bridge.
   施工队伍使用了刚性框架梁来加固新桥的基础。
3. 3. The rigid frame beam was crucial inpreventing the collapse of the old building duringan earthquake.
   刚性框架梁在防止旧建筑在地震中倒塌方面起到了关键作用。