valve air relief

例句：

1. 1.The engineer installed a new valve in the pipeline to improve air flow.
   工程师在管道中安装了一个新的阀门来改善空气流动。
2. 2.The valve is designed to control the flow of gases through the pipe.
   这个阀门设计用来控制气体通过管道的流动。
3. 3.The valve was responsible for maintaining the pressure balance in the system.
   这个阀门负责维护系统的压力平衡。