timed valve system

例句：

1. 1.The timed valve system is used to control the flow of gases in a pipeline.
   定时阀门系统用于控制管道中气体的流动。
2. 2.The timed valve system helps to prevent leaks and ensure safe operation.
   定时阀门系统有助于防止泄漏并确保安全操作。
3. 3.The timed valve system can be adjusted to suit different needs and conditions.
   定时阀门系统可以根据不同需求和条件进行调整。