净能量是排斥能，和引力能的总和。

The net energy is the sum of the repulsive and the attractive.

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因此，什么是净能量呢？

And so, what's the net energy?

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基于生命周期清单分析原理，建立了玉米燃料乙醇的净能量分析方法。

The method of net energy analysis for fuel ethanol from corn was developed based on principles of life cycle inventory(LCI) analysis.

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What we've seen is we have a net lowering of energy of the molecule versus the individual atoms.

分子轨道对于单个原子轨道来说,我们可以看到的是一个净的能量降低。

麻省理工公开课 - 化学原理课程节选

The net energy is the sum of the repulsive and the attractive.

净能量是排斥能,和引力能的总和。

麻省理工公开课 - 固态化学导论课程节选

So we can compare the two electron configurations, and we can actually think about what we figure out from them, we see that two are lowered in energy, two electrons are raised in energy, so we have no net gain or no net loss in energy for h e 2.

我们可以比较两种电子构型，我们可以考虑,我们发现这，两个电子能量变低，两个电子能量升高，所以在He2里没有净的能量得失。

麻省理工公开课 - 化学原理课程节选