discharge valve spindle

例句：

1. 1.The discharge valve is responsible for controlling the flow of gases out of the system.
   排放阀负责控制气体从系统中流出。
2. 2. The spindle of the discharging valve is crucial to maintaining proper functioning of the system.
   排放阀的主轴对保持系统正常运行至关重要。
3. 3.During maintenance, the technician carefully inspected the discharging valve spindle for any signs of wear or damage.
   维护期间，技术员仔细检查了排放阀主轴，以寻找任何磨损或损坏的迹象。