perfo-rockbolt

例句：

1. 1. The carpenter used a hammer to perfo-rockbolt the door shut.
   木匠用锤子把门关上了。
2. 2. He fixed the window with a perfo-rockbolt and sealed it with caulking.
   他用一个螺栓固定窗户并用密封剂封住了它。
3. 3. The engineer tested the bolts for strength before installing them in the wall.
   工程师在安装之前测试了螺栓的强度。