water pump packing

例句：

1. 1. The engineers were busyinstalling the new water pump packing.
   工程师们忙于安装新的水泵配件。
2. 2. The technicians had to replace theold water pump packing with newones.
   技术人员不得不用新的水泵配件替换旧的。
3. 3. The factory was inspecting thewater pump packing for any defects.
   工厂正在检查水泵配件是否有任何缺陷。