hot-rolled steel joist

例句：

1. 1.The construction of the new bridge required the use of hot-rolled steel joists for its main beams.
   建造新桥需要使用热轧钢梁作为主梁。
2. 2.The engineer carefully measured the dimensions of the hot-rolled steel joists before installing them in the building.
   工程师在安装这些热轧钢梁之前仔细测量了它们的尺寸。
3. 3. Due to their strength and durability, hot-rolled steel joists are commonly used in high-rise buildings.
   由于它们具有强度和耐久性，热轧钢梁常用于高层建筑中。