So what I want to tell you is we also always get the same bond order if we instead only deal with the valence electrons.

我想要说的是我们如果，只考虑价电子也可以得到相同的键序。

youdao

And you can go ahead and tell me what you think the bond order is going to be for this molecule.

你们告诉我你觉得，这个分子的键序应该是怎样的。

youdao

So what we see is a bond order of 0, and again, the bond is very, very weak.

我们看到键序是0，同样的，键非常非常的弱。

youdao

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

So we know that it's 1, because we have 1, 2, 3, 4 bonding, minus 2 anti-bonding, and 1/2 of that is a bond order of 1.

我们知道它是，因为我们有1，2，3，4个成键，减去2个反键，它的一半就是键序为1。

麻省理工公开课 - 化学原理课程节选

So for the bond order we want to take 1/2 of the total number of bonding electrons, so that's going to be 4 minus anti-bonding is 4, so we end up getting a bond order that's equal to 0.

键序等于1/2乘以,总的成键电子数，也就是4，减去反键电子数，也就是4。,所以最后得到键序为0。

麻省理工公开课 - 化学原理课程节选

Wall Street may also be talking up its e-bond efforts in order to ward off the Securities and Exchange Commission, America's main markets regulator.

ECONOMIST: E-bonds, licensed to kill

This will allow the institutional investors that dominate the bond market to trade directly with each other through a sophisticated order-matching system, operated under the auspices of the Boston Stock Exchange.

ECONOMIST: E-bonds, licensed to kill

At present, this information is in the hands of Canada's seven inter-dealer brokers, firms which handle trades for bond dealers and banks in order to keep the transactions anonymous.

ECONOMIST: Bond trading