If Back to the Future 2 holds your standards for technology there are a lot of things we should have by now — one of them being flying cars.

如果“回到未来2”让你对科技有了新的标准，那么我们现在应该有很多东西——其中之一就是，飞行汽车。

youdao

So we can do this for any final charge we have, if we have a molecule that has a charge of plus 2, then all of the formal charges should add up to plus 2 and so on.

对于任意净电荷的情况，我们都可以这样做，比如假设我们有一个带两个正电荷的分子，那么所有的形式电荷加起来应该等于正二，等等。

youdao

Another thing to point out in these two graphs is that we do have nodes, and we figured out last time, we calculated how many nodes we should have in a 2 s orbital.

另外这两张图上要指出的是，我们可以看到节点，上次我们知道，我们算了2s轨道有多少个节点。

youdao

Another thing to point out in these two graphs is that we do have nodes, and we figured out last time, we calculated how many nodes we should have in a 2 s orbital.

另外这两张图上要指出的是,我们可以看到节点，上次我们知道，我们算了２ｓ轨道有多少个节点。

麻省理工公开课 - 化学原理课程节选

So we can do this for any final charge we have, if we have a molecule that has a charge of plus 2, then all of the formal charges should add up to plus 2 and so on.

对于任意净电荷的情况,我们都可以这样做，比如假设我们有一个带两个正电荷的分子，那么所有的形式电荷加起来应该等于正二，等等。

麻省理工公开课 - 化学原理课程节选

We can look at the 2 p, which should have one radial node, and we just figured it out for the, excuse me, 3d for the 3 p has one radial node, and for the 3 d here, we should have zero radial nodes, we just calculated that.

我们看2p，它有一个节点，我们已经知道对于，不好意思，是3p有一个节点，对于，它应该没有径向节点，我们刚刚算过这个。

麻省理工公开课 - 化学原理课程节选

We should have several good stories ready when we resume publishing with an issue dated Sept. 2.

FORBES: The big and the bad

In Asia we have Japan, which should also grow between 2% and 3%.

FORBES: Big Trucks On A Bumpy Road

What we came up with were some surprisingly round digits: if we did our math right, it should have a square 3.2-inch screen (each side being 2.28-inches), and be 4.75-inches tall, 2.86-inches wide, and 0.77-0.9-inches deep (between its thinnest and thickest points).

ENGADGET: HP's hw6500: size, details, more pics!