positive displacement crescent type gear pump  正排量月牙型齿轮泵

positive displacement grout pump  排液灌浆泵

positive displacement pump  排量式泵; 容积式泵; 阳性金属; 正排量泵; 容积式真空泵; 正排量式泵; 正置换型泵; 容积泵

positive displacement self-priming progressive cavity rotary pump  正排量自吸分级腔螺旋形迥转泵

positive displacement type pump  正排量泵

positive-displacement pump  正排量泵

positive-displacement seawater(fresh water)pump  容积式海(淡)水泵

a three-pump-pump  一控三泵控泵

sodium pump (=sodium-potassium pump =Na-K pump)  钠钾泵

positive electrode [= positive pole]  阳[电]极; 正[电]极

positive-negative-positive  正-负-正

conversion for performance of model pump to actual pump  水力参数换算方法

double pump end pump  双泵端泵

Duty pump and spare pump  消防泵和备用泵

fuel pump with vacuum pump  带真空泵的燃油泵

ion-sorption pump (=ion pump)  离子[吸]泵

Pump-Control-Pump  泵控泵

pump-control-pump technique  泵控泵技术

steam pump and electric pump  汽泵与电泵