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特,综合考虑了体的可压缩、效应、体连条件和球阀的力特,建立了直线电机采油泵球阀运规律的精确运微分方程组。

However, because the compressibility of DPPC monolayer is low at high surface pressure, DPPC monolayer is easy to cause film collapsing due to overcompression.

然而DPPC单分子膜在高膜压时之可压缩小，因而过度的压缩，会导致单分子膜的崩塌。