"I take it that most of your soldiers are small farmers and will need the horses to put in a crop that will carry themselves and their families through the next winter.

VOA: special.2009.12.24

If you multiply entry 23, which is 13.6 electron volts I will show you what the electron volt is in a few minutes. We will just put it up here prematurely. But that is given in your chart.

如果乘上第23个常量，代表13。6电子伏,接下来我就会向你们说明什么是电子伏,我们先提前把它提出来,但那只是放在你们的图表中。

麻省理工公开课 - 固态化学导论课程节选