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单分子膜在高膜时之可缩性小，因而过缩，会导致单分子膜崩塌。

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.

结现场试验,根据直线电机采油特性,综考虑了液体可缩性、魏氏效应、液体连续流条件和球阀力特性,建立了直线电机采油球阀规律精确微分方程组。