discharge valve stud

例句：

1. 1.The engineer carefully inspected the discharging valve stud before installing it.
   工程师在安装前仔细检查了排放阀杆。
2. 2.The technician replaced the discharging valve stud with a new one.
   技术员用一个新的排放阀杆替换了旧的。
3. 3.The valve stud was crucial to ensuring proper functioning of the exhaust system.
   阀门杆对于确保排气系统正常工作至关重要。