That is to say the ionization energy of the second most electron.

这是二级电离能，这就是说，电子数第二多的电离能。

youdao

One major difference between electron affinity and ionization energy is that when we talked about ionization energy, remember ionization energy always has to be positive.

电子亲和能，与电离能之间最大的不同就在于，当我们提到电离能的时候，记得电离能总是正的。

youdao

So, second ionization energy simply means you've already taken one electron out, now how much energy does it take for you to take a second electron out.

第二电离能简单地说就是，在你已经拿走一个电子以后，再拿走第二个电子，所需要消耗的能量。

youdao

In this case, it's called the ionization energy, plus whatever kinetic energy we have left over in the electron.

在这种情况下，它就是电离能，剩余部分将转化为,出射电子的动能。

麻省理工公开课 - 化学原理课程节选

One major difference between electron affinity and ionization energy is that when we talked about ionization energy, remember ionization energy always has to be positive.

电子亲和能,与电离能之间最大的不同就在于,当我们提到电离能的时候，记得电离能总是正的。

麻省理工公开课 - 化学原理课程节选

This is the second ionization energy. That is to say the ionization energy of the second most electron.

这是二级电离能，这就是说,电子数第二多的电离能。

麻省理工公开课 - 固态化学导论课程节选