prestressed concrete beam

例句：

1. 1.The prestressed concrete beam is the main load-bearing structure of the bridge.
   预应力混凝土梁是桥梁的主要承重结构。
2. 2.The prestressed concrete beam has a high tensile strength and good durability.
   预应力混凝土梁具有较高的抗拉强度和良好的耐久性。
3. 3. The prestressed concrete beam was designed to withstand heavy loads and resist earthquakes.
   预应力混凝土梁被设计用来承受重载并抵抗地震。