valve rod

• 阀杆

valve rod的用法和样例：

例句

1. The stem has a slightly smaller diameter than the valve bore.
   阀杆的直径略小于阀体孔的直径。
2. Valve shall have a brass body and stainless steel stem and spring.
   这种阀门应该是黄铜阀体，不锈钢阀杆和弹簧。