three pressure equalizing pressure control valve

例句：

1. 1.The pressure equalizing control valve is used to maintain a constant pressure in the pipeline system.
   压力平衡控制阀用于保持管道系统中的压力恒定。
2. 2. The three-pressure equalizing control valve was designed to improve the efficiency of the oil extraction process.
   三个压力平衡控制阀被设计用来提高石油提取过程的效率。
3. 3. The engineers carefully inspected the three-pressure equalizing control valve before installing it in the new plant.
   工程师们在安装新的工厂之前仔细检查了三个压力平衡控制阀。