by-pass valve piston rod

例句：

1. 1. The by-pass valve is designed to prevent the flow of fluids through a restricted passageway.
   旁路阀的设计是为了防止流体通过狭窄通道流动。
2. 2.The piston rod of the by-pass valve is crucial for maintaining the proper functioning of the system.
   旁路阀的活塞杆对于保持系统的正常工作至关重要。
3. 3.During maintenance, technicians need to replace the by-pass valve piston rod to ensure the safety of the system.
   在维护过程中，技术人员需要更换旁路阀活塞杆以确保系统的安全。