自动垂直钻井导向液压系统柱塞泵驱动轮廓曲线选取及仿真
자동수직찬정도향액압계통주새빙구동륜곽곡선선취급방진
Selection and Simulation on Drive Contour Curves of Piston Pump Belong to an Automatic Vertical Drilling Oriented Hydraulic System
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