differential plunger pump 差动柱塞泵 ; 差动式柱塞泵

differential pump system 差分抽运系统

differential pump pressure 泵的压差

differential getter pump 差动式吸气泵

differential ion pump 差动电离泵

differential oil pump relay 差速器机油泵继电器

differential steering pump group 差动转向泵组件

differential oil cooler pump 差速器机油冷却器泵

differential steering pump 差动转向泵