single-beat main stop valve

例句：

1. 1. The single-beat main stop valve is crucial for maintaining the proper flow of oil in the engine.
   单拍主停阀对于保持发动机中油的适当流动至关重要。
2. 2. The engineer carefully inspected the single-beat main stop valve to ensure it was functioning correctly.
   工程师仔细检查了单拍主停阀，确保它正常工作。
3. 3. During maintenance, the technician replaced the single-beat main stop valve with a new one.
   在维护期间，技术人员用一个新的单拍主停阀替换了旧的。