dual valve pump

例句：

1. 1.The dual valve pump is used to control the flow of oil in the engine.
   双阀泵用于控制发动机中油的流动。
2. 2.The dual valve pump has a high efficiency and low noise level.
   双阀泵效率高且噪音低。
3. 3.The dual valve pump is an important part of the oil system in modern engines.
   双阀泵是现代发动机油系统中的一个重要部分。