hanger bolt

例句：

1. 1. The hanger bolts on the wall were rusted and needed to be replaced.
   墙上的挂件螺栓生锈了，需要更换。
2. 2.The engineer used a hanger bolt to secure the heavy equipment.
   工程师用一个挂件螺栓来固定重型设备。
3. 3. The hanger bolts are designed to hold up the roof in place.
   挂件螺栓的设计是为了支撑屋顶。