variable delivery pump meaning in Chinese

变量泵
变量输送泵
可变排量泵
可变容积泵
可调流量泵

Aerospace . hydraulic , pressure compensated , variable delivery pumps . general requirements
航空航天.液压压力补偿变量输送泵.一般要求
Aerospace - hydraulic , pressure compensated , variable delivery pumps - general requirements
航空航天.气动压力补偿式变量传送泵.一般要求
Aerospace - hydraulic , pressure - compensated , variable delivery pumps - general requirements for 35000 kpa systems
航空航天.液压的压力补偿的变量输送泵. 35000kpa系统的一般要求