我们得到一条在一个方向上向下，而在另一个方向上向上的抛物线。

We have a parabola going downwards in one direction, and upwards in the other one.

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歌词大意： 像托尼蒙大拿州在他的脚趾上。向上向上和向下你旋转圆和圆。

Like Tony Montana on his toes. Up up and down your spinning round and round.

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向上光标键是向上指向箭头的图标。

Uparrow is the picture of an upward pointing arrow.

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And so what happens when we remove these stops is that the piston slams up against the next pair of stops.

把挡板移开后活塞会,向上移动直道第二个挡板处。

麻省理工公开课 - 热力学与动力学课程节选

So by parallel we mean - they're either both spin up remember that's our spin quantum number, that fourth quantum number.

所以我们意味着,它们都是自旋向上,记住我们的自旋量子数，是第四个量子数。

麻省理工公开课 - 化学原理课程节选

So we remove the stops, and the piston moves up, and now we remove one of these weights.

我们移走挡板，活塞向上移动，移走一个重物。

麻省理工公开课 - 热力学与动力学课程节选