The model of hydraulic motor pump variable speed control system is built.
同时建立了该液压电机泵变速控制系统的数学模型。
The optimal design model of downhole pump depth and rod string assemblage is set up.
建立下泵深度和抽油杆柱组合优化设计模型。
Using impeller flow area optimization model, flow area of the pump was selected.
采用叶轮轴面过流面积优化模型，对叶轮的轴面流道参数进行了优化设计。
The utility model relates to a pump valve of a well drilling mud pump.
本实用新型涉及钻井泥浆泵的泵阀。
The utility model relates to a pump valve of a well drilling mud pump.
本实用新型涉及钻井泥浆泵的泵阀。
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