Last December, the Australia-based company Invetech reported that it had delivered the world's first production model 3-D bio-printer for Organovo.

VOA: special.2010.10.19

So what I want to point out is 3d2 what we said now is that the 3 d 2 is actually lower in energy, so if we were to rewrite this in terms of what the actual energy order is, 3d2 4s2 we should instead write it 3 d 2, 4 s 2.

所以我们想指出的是,我们现在所说的是,实际上能量比较低，所以如果我们重新的,写出实际的能量顺序，我们应该写出。

麻省理工公开课 - 化学原理课程节选

s1 So for the fourth period, now we're into the 4 s 1 3d for potassium here. And what we notice when we get to the third element in 4s2 and the fourth period is 3d that we go 4 s 2 and then we're back to the 3 d's.

对于第四周期到现在我们来到钾的1,然后我们返回到,我们注意到当我们看到第三个元素,第四周期我们来到,然后我们返回到。

麻省理工公开课 - 化学原理课程节选

Still,the Consumer Electronics Association predicts that more than four million 3-D TV sets will be sold this year.

VOA: special.2010.01.26

From here on down, if I bothered to do it, we'd find that choosing 3 always gets me 5% more of the vote than I would have had from choosing 2, against any of these higher numbers.

如果我不怕麻烦 我能一直这么写下去,我们发现选择立场3总是比选择立场2,使我多获得5%的选票,在对手选更靠后的立场的情况下

耶鲁公开课 - 博弈论课程节选

The huge popularity of 3-D films like "Avatar," "Up" and "Monsters vs.Aliens" has many people willing to buy this costly, developing technology.

VOA: special.2010.01.26

This is incredibly important because,when you look at this number that we started out with,saying the benchmark was 9.9 but net of fees the managers on average only lost thirty basis points--or .3% -you'd say,well that's a game I don't mind playing.

这极其重要,因为当你看这些数字时,刚才说过基准收益是9.9%,但是主动管理型基金经理人的平均净利润,只落后了30个基点或者说0.3%,你可能会说这个游戏,我不介意玩一玩

耶鲁公开课 - 金融市场课程节选

The 3-D movie "Up" tells about an old man and a young boy who have exciting adventures.

VOA: special.2010.03.01

So, for example, if we needed to figure out the electron configuration for titanium, 4s2 it would just be argon then 4 s 2, 3d2 and then we would fill in the 3 d 2.

所以举个例子,如果我们需要解出钛的电子构型，它会是Ar然后，然后我们填充。

麻省理工公开课 - 化学原理课程节选

She says 3-D televisions promise to bring the intense experience from movie theaters to the home.

VOA: special.2010.01.26

I don't care how you do it on exams or on problem sets, but you do need to be aware that the 3 d once filled is lower in energy than the 4 s, and the reason you need to be aware of that is if you're asked for the electron configuration now of the titanium ion.

我不关心你们在考试或者,问题集中如何做它，但是你们的确需要知道3d一旦被填充,它的能量是小于4s的，你们需要知道这个的原因,是如果你现在被要求,写出钛离子的电子构型。

麻省理工公开课 - 化学原理课程节选

The company announced last year that it would only make 3-D films in the future.

VOA: special.2010.01.26

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

The latest 3-D TVs work by dividing picture images in two,one for each eye.

VOA: special.2010.01.26

s But it just turns out that the 4 s is so low in energy that it actually surpasses the 3 d, because we know the 3 d is going to be pretty high in terms of the three shell, and the 4 s is going to be the lowest interms of the 4 shell, and it turns out that we need to fill up the 4 s 4s before we fill in the 3 d.

但是结果是,能量较低,4s是第四层最低的，因为我们知道3d在第三层,是非常高的，4s是第四层,最低的，结果是我们在填充3d之前,需要先填充。

麻省理工公开课 - 化学原理课程节选

So each eye sees a slightly different image, producing the 3-D effect.

VOA: special.2010.01.26

d1 2 3 And we can do that just going along, 3 d 1, 2 3, and the problem comes when we get to chromium here, which is instead of what we would expect, 4s23d4 we might expect to see 4 s 2, 3 d 4.

我们能做的就是继续，问题出现了,当我们来到铬元素时，它不是我们预期的那样，我们可能预期。

麻省理工公开课 - 化学原理课程节选

We start with the 3-D science-fiction adventure movie "Avatar."

VOA: special.2010.03.01

So if we compare l increasing here, so a 3 s to a 3 p to a 3 d, what we find is that it's only in the s orbital that we have a significant probability of actually getting very close to the nucleus.

我们比较当ｌ变大的时候，从３ｓ到３ｐ到３ｄ,我们可以发现只有ｓ轨道,有很大的概率,非常接近原子核。

麻省理工公开课 - 化学原理课程节选

The 3-D science fiction adventure movie,"Avatar,"

VOA: special.2010.01.01

So the correct answer for titanium plus two Ar3d2 is going to be argon 3 d 2, whereas if we did not rearrange our order here 4s2 we might have been tempted to write as 4 s 2 so keep that in mind when you're doing the positive ions of corresponding atoms.

所以正2价钛离子,的正确答案是，然而如果我们不重新安排顺序,我们可能会写出2,所以请记住,它当你们在解关于原子,的正离子的时候。

麻省理工公开课 - 化学原理课程节选

(Speaking) But a study at the University of California Berkeley found that 3-D movies can cause eye strain.

VOA: standard.2010.02.21

So if you look at the energy diagram, what we see is that the 4 s orbitals are they're just ever so slightly lower in energy than the 3 d orbitals.

如果你看能量图，我们看到的是4s轨道,他们仅仅比3d轨道,能量低一点点。

麻省理工公开课 - 化学原理课程节选

Avatar,the biggest box office success in history, has opened the door for 3-D TV.

VOA: standard.2010.03.11

s So, we would actually take an electron out of the s, 3 d 3 4 s 1 which gives us 3 d 3 and then 4 s 1.

轨道，The，s。,因此，我们应该拿走s，轨道上的一个电子，然后得到。

麻省理工公开课 - 化学原理课程节选

Martin Banks, a professor of optometry at Berkeley, says 3-D doesn't allow our eyes to follow the rules because we're focusing on things both far and near at the same time.

VOA: standard.2010.02.21

So what we know is that these 3 d orbitals are higher in energy than 4 s orbitals, so I've written the energy of the orbital here for potassium and for calcium.

我们所知道的是,3d轨道能量,比4s轨道能量高，所以我写出了,钾和钙的轨道能量。

麻省理工公开课 - 化学原理课程节选

The Secretary of State said she is working to integrate U.S.aid efforts more closely with diplomacy and defense operations abroad without politicizing aid programs saying the "3-D's" - development, diplomacy and defense must be mutually-reinforcing.

VOA: standard.2010.01.06

You need to know how to think about them in the same way we think about s and p orbitals, but for example, you don't yet need to know what all of the names are except for this 3 d z squared here.

你们只要知道，如何像考虑s和p轨道一样,来考虑它们，但你们不需要,知道它们的名字,除了这个3dz2轨道外。

麻省理工公开课 - 化学原理课程节选

So again, what we see is the same pattern where the most probable radius, if we talk about it in terms of the d, that's going to be smaller then for the p, and the 3 p most probable radius is going to be closer to the nucleus than it is for the 3 s most probable radius that we're looking at.

同样的，我们可以看到相同的行为,ｄ轨道的，最可能半径，比ｐ轨道小，3p轨道的,最可能半径,比3s轨道离原子核更近。

麻省理工公开课 - 化学原理课程节选