Well, the discount rate is sort of the--you notice there are two different interest rates here and you might be confused by them.

贴现率是一种,这里有两种不同的利率,你们可能会将其混淆

耶鲁公开课 - 金融市场课程节选

Convention, OK, this negative sign is just a pure convention. You just got to use it all the time. If you use an old textbook, written when I was taking thermodynamics, they have the opposite convention, and it's very confusing. But now we've all agreed on this convention, and work is going to be with the negative sign here.

系统对外界做功的符号为负,这就是我们,在本课中的规定，纯粹出于统一符号的需要，有些教科书中，可能会使用相反的符号规定,注意不要混淆了，这门课上,我们将一直使用。

麻省理工公开课 - 热力学与动力学课程节选

Unfortunately, this is also call the Rydberg constant, so it's a little bit confusing. But really it means h the Rydberg constant divided by h, and that's equal to 3 .

不幸的是，它也叫Rydberg常数，所以这可能会有点混淆,但它表示Rydberg常数除以。

麻省理工公开课 - 化学原理课程节选

So that explains probably most of the confusion here and you just want to be careful when you're reading the problems that that's what you read correctly. I think 4 everyone would now get the clicker question correct.

这可能解释了大部分人的混淆之处,你们读题目的时候一定要仔细,我相信现在每个人都能回答正确了,第三激发态，n等于。

麻省理工公开课 - 化学原理课程节选