That's because the banker is thinking, if I have this amount right now and I invest it for one year, then what do I have.

那是因为银行认为,如果我现在持有这些钱并将其投资一年,然后我会得到什么

耶鲁公开课 - 金融市场课程节选

e The charge on the anion times minus e, so there is the minus e squared, 0R0 and divided by 4 pi epsilon zero r naught, because now I am evaluating this function at r naught, one minus one over n where n is the Born exponent.

阴离子的电荷乘以，因此会有-e的频繁，除以4πε,因为现在我用r圈评估这个函数，1-1/n，n是波恩指数。

麻省理工公开课 - 固态化学导论课程节选