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Terms for subject Drilling containing positive displacement | all forms | exact matches only | in specified order only
EnglishChinese
double kick-off positive displacement mud motor同向双弯外壳螺杆钻具
positive displacement drill螺杆钻具
positive displacement flowmeter容积式流量计
positive displacement motor容积式液马达
positive displacement motor容积式马达
positive displacement mud motor正排量泥浆马达

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