extended slide valve rod

例句：

1. 1.The engineer used a special tool to extend the slide valve rod.
   工程师使用特殊的工具来延长滑动阀杆。
2. 2. The new design of the valve rod extends its lifespan significantly.
   新设计的阀杆显著地延长了其使用寿命。
3. 3.The technician had to disassemble the valve rod to replace it.
   技术人员不得不拆开阀杆来更换它。