cylinder relief cock

例句：

1. 1.The cylinder relief cock on the engine is responsible for reducing the pressure in the cylinder.
   发动机上的气缸减压阀负责减少气缸内的压力。
2. 2.The engineer had to replace the cylinder relief cock due to its failure.
   工程师不得不更换因故障而失效的气缸减压阀。
3. 3.During maintenance, the technician carefully checked the cylinder relief cock to ensure it was functioning properly.
   在维护期间，技术员仔细检查了气缸减压阀以确保其正常工作。