The sum of kinetic energy and potential energy doesn't change.

动能和势能，总和没有改变。

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Then we have the conservation - of mechanical energy — the sum of kinetic energy and potential energy.

我们知道，机械能守恒定律-，动能和，势能的总和。

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The comparison between velocity distribution and pressure distribution in the cover was made. The result well expressed the energy transition between kinetic energy and potential energy in the cover.

罩内气速分布与压力分布的对比情况较好地反映了罩内动能与势能之间的能量转换规律。

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The total energy of the system, which we are going to get from postulate number four, which says the energy of the electron, which is the energy of the system, is the sum of the kinetic and the potential energy.

这个系统的总能量，也就是我们将从第四个假设中算出的能量，也就是电子运动产生的能量，也就是整个系统的能量，是动能和位能的总和。

麻省理工公开课 - 固态化学导论课程节选

It means that we better get away from these deterministic models where we have a little electron here with its potential energy and its kinetic energy.

它的意思是我们最好远离,这些确定性模型,那里有一个小电子,它具有势能和动能。

麻省理工公开课 - 固态化学导论课程节选

So if we say that l is just talking about our kinetic energy part, our rotational kinetic energy, and we know that electrons have potential energy, then it makes sense that l, in fact, can never go higher than n.

如果我们说，l仅仅是,描述动能项，我们的旋转动能，我们知道，电子有势能，所以可以理解，l不能比n高。

麻省理工公开课 - 化学原理课程节选

They include changes to the aerodynamics, the re-introduction of slick, untreaded tyres after 11 years with grooved rubber and the potential use of a kinetic energy recovery system (Kers), which stores energy that would have been dissipated during braking and reapplies it while the car is accelerating.

BBC: Red Bull expect wins from new car