The way that we can figure this out is using something called bond order, and bond order is equal to 1/2 times the number of bonding electrons, minus the number of anti-bonding electrons.

我们可以用叫做,键序的概念来弄明白它，键序等于1/2乘以成键电子,数目减去反键电子数目。

麻省理工公开课 - 化学原理课程节选

It's the most simple-- or often called a bill-- a discount bond does not pay interest; it's sold at a discount.

它是最简单的,经常被称为国库券,它是一种贴现债券,且不付息,并以折扣价发行

耶鲁公开课 - 金融市场课程节选

This is called a dative bond.

这种化学键称为配位键。

麻省理工公开课 - 固态化学导论课程节选

It's what it's called when an atom takes both electrons in the bond.

这就是它为什么叫这个名字,当一个原子从成键中得到两个电子。

麻省理工公开课 - 固态化学导论课程节选

Finally, I just want to say that we have also a kind of bond called an indexed bond, which is a bond whose coupons are indexed to inflation.

最后一点是,一种叫物价指数债券的债券,这种债券的票息被通胀指数化了

耶鲁公开课 - 金融市场课程节选