In other words, if the rise in instability is greater than the fall in stability, delta E this is a positive delta E.

换而言之，如果不稳定性的增加,大于稳定性的降低，将会有一个正的。

麻省理工公开课 - 固态化学导论课程节选

delta E What we do is ask ourselves what is the delta E?

我们做的是问问我们自己，什么是？

麻省理工公开课 - 固态化学导论课程节选

And what we say when we talk about the delta energy is I E 2 that this is going to be equal to i e 2, or the second ionization energy, or we could say the negative of the binding energy of a 2 s electron in b plus.

那么我们说,Δ，E，应该等于，或者说第二电离能，也就是正一价硼中，2，s，电子的,束缚能的负值。

麻省理工公开课 - 化学原理课程节选

And you have to ask yourself is the energy difference here, the delta E in the electronic states, how does that compare with the E of visible light?

所以我们会问,是由于能量的不同么，例如deltaE在电子能态的不同，那如何把E与可见光联系起来？

麻省理工公开课 - 固态化学导论课程节选

And so, in fact, the delta here is negative.

因此，实际上这里的delta，E是负的。

麻省理工公开课 - 固态化学导论课程节选