positive-displacement pump
短语词组
- positive -displacement seawater fresh water pump 容积式海水泵
- double -stage positive displacement vacuum pump 双级结构容积式真空泵
- positive displacement oil -sealed liquor pump 油封式正位移式打液泵
- diaphragm -type positive displacement metering pump 隔膜型正排量计量泵 返回 positive-displacement pump