positive displacement crescent type gear pump
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 type flow meter
positive-displacement pump
double-acting positive displacement compressor
positive [displacement] blower
positive displacement blower
positive displacement compressor
positive displacement drill
Positive Displacement Flow Meter
positive displacement flowmeter
positive displacement grout pump
positive displacement hydraulic drive
positive displacement meter
容积式流量计
排量式泵
正排量计
正位移计
机率分布函数
正排量式容积测定仪
Positive Displacement Motor
positive displacement refrigerant compressor conde
positive displacement respirometer
positive displacement self-priming progressive cavity rotary pump