saw-tooth truss

例句：

1. 1. The construction of the new bridge required the use of a sawtooth truss.
   建造这座新桥需要使用锯齿形桁架。
2. 2. The engineer designed the sawtooth truss to withstand heavy loads.
   工程师设计了锯齿形桁架，以承受重负载。
3. 3. The sawtooth truss was used as a temporary support during the construction phase.
   在施工阶段，锯齿形桁架被用作临时支撑。