You've got to put more pressure on one side than the other if you want to push that gas through the throttle, right? So this is where the time scale issue comes into play.

如果你想让更多的气体通过节流阀,应该使一边的压强,大于另一边，是吗？所以这就是,时间尺度发挥作用的地方。

麻省理工公开课 - 热力学与动力学课程节选

All right, then as I push through, I'm going to start with all of my gas on this side, and at the end I'm going to have all the gas on the other side.

好的，随着我的推动,刚开始这些气体全在这一边,到了最后，这些气体全在另一边。

麻省理工公开课 - 热力学与动力学课程节选