For the disadvantage and shortage, the four - location field pump rubber stator injection - vulcanization unit is newly designed.

针对其存在的缺点与不足, 全新设计了四工位油田螺杆泵橡胶定子注射硫化机组.

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The thesis's research work is about the development of the field pump brushless DC motor controller.

论文的研究工作是围绕着油田螺杆泵用无刷直流电动机控制器的研制来开展的.

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