The condensability of liquid,the Westphal's effect and the continuous flow condition are not only comprehensively considered,but also the dynamic property of the ball valve being established.
结合现场试验,根据直线电机采油泵运动
,综合考虑了液体的可压缩
、

应、液体连续流动
件和球阀的动力
,
立了直线电机采油泵球阀运动规律的精确运动微分方程组。


这一点?


力而变形和变扁。
测试萨诺斯假说,结果发
指垫


