keyed beam

例句：

1. 1. The engineer designed the keyed beam to support the building's weight.
   工程师设计了键式梁来支撑建筑物的重量。
2. 2.The construction of this bridge required the use of keyed beams for its stability.
   这座桥梁的建设需要使用键式梁来确保其稳定性。
3. 3. The keyed beam is crucial in preventing the collapse of the structure during extreme weather conditions.
   在极端天气条件下，键式梁对于防止结构坍塌至关重要。