raised head bolt

例句：

1. 1. The engineer raised the head bolt to fix the broken pipe.
   工程师将头部螺栓提升以修复断裂的管道。
2. 2.The car's engine was raised, and the head bolt was removed to replace the worn out spark plug.
   汽车引擎被抬起，头部螺栓被移除以更换磨损的火花塞。
3. 3. The construction workers had to raise the head bolts of the heavy machinery to lift it into place.
   建筑工人不得不抬起重型机械的头部螺栓，将其放置到位。