撑材

例句：

1. 1. The engineer used the steel beam as a support for the heavy equipment.
   工程师用钢梁作为重型设备的支撑。
2. 2. The bridge was constructed with concrete slabs as its main support materials.
   这座桥是用混凝土板作为主要支撑材料建造的。
3. 3. The roof of the house is supported by wooden beams and joists.
   这所房子的屋顶由木梁和搁架支撑着。