filling screw

例句：

1. 1. The filling screw is usedto secure the lid of the container.
   填充螺钉用于固定容器的盖子。
2. 2. The engineerused a filling screw to tighten the bolts on the door.
   工程师使用填充螺钉来紧固门上的螺栓。
3. 3. The fillingscrew was removed to replace the damaged partof the machine.
   取出填充螺钉以更换机器损坏的部分。