feed valve stem nut

例句：

1. 1.The engineer carefully replaced the worn-out feed valve stem nut.
   工程师小心翼翼地更换了磨损的进料阀杆螺母。
2. 2.During maintenance, the technician found a faulty feed valve stem nut and replaced it immediately.
   在维护期间，技术员发现一个故障的进料阀杆螺母，并立即更换了它。
3. 3. The new design of the feed valve stem nut significantly improved the efficiency of the machinery.
   新设计的进料阀杆螺母显著提高了机械设备的效率。