On the basis of a large number of field test data, the regression of the displacement coefficient and system efficiency for pumping unit wells were established.
本文在抽油机井大量现场测试数据的基础上，建立了抽油机井系统效率、排量系数这两个重要指标与诸影响因素之间的回归方程。
A new concept on the displacement operator for beam unit is established, and a method of calculating the deflection Angle of beam unit is then provided.
本文建立了一个梁单元位移算子的新概念，并提供一种梁平面弯曲变形的梁单元位移算子求变形的计算方法。
With MCS-51 single-chip microcomputer as control unit and grating scales measuring displacement, a new type of quasi-close loop control system is built on universal lathe.
文章选用MCS -5 1单片机作为控制核心，直线光栅测量位移，在普通车床上建立了一种新型的准闭环控制系统。
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