Langer girder

例句：

1. 1. The engineer designed the Langer girder to support the weight of the building.
   工程师设计了梁格架来支撑建筑物的重量。
2. 2. The construction of the Langer girder was a major project for the city.
   建造梁格架是该市的一项主要工程。
3. 3. The Langer girder is essential for the stability of the bridge.
   梁格架对于桥梁的稳定性至关重要。