名词
中文翻译：闸阀
同义词：
['valve', 'shutoff valve例句：1. The block valve is used to prevent the flow of gas during maintenance.（闸阀用于在维护期间防止气体流动。）2. The technician needs to replace the block valve before starting the engine.（技术人员需要更换闸阀才能启动发动机。）']
例句：
-
1. The block valve is used to prevent the flow of gas during maintenance.
闸阀用于在维护期间防止气体流动。
-
2. The technician needs to replace the block valve before starting the engine.
技术人员需要更换闸阀才能启动发动机。
-
3.The block valve is a critical component in the oil system of an engine.
闸阀是发动机油系统中的关键部件。