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Musical performers also included Madonna,Jay-Z,Rihanna, Bono and the Edge.
VOA: special.2010.02.01
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So instead of being equal to negative z squared, now we're equal to negative z effective squared times r h all over n squared.
这里不再等于-z的平方，现在我们等于-有效的z的平方,乘以RH除以n的平方。
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So z equals 7 -- this is the cut-off where, in fact, the sigma orbital is going to be higher in energy than the pi 2 p orbitals.
所以z等于7-这是分界点，实际上，sigma轨道能量,要比π2p轨道高。
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Let's bind z eh let's bind z to the-- f if I could type it would help-- say, f of 3. OK?
让我们给z赋值--如果我能打字就好了-,比方说？
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It looks a little something like that, and the screen doesn't quite do it justice here, Z but there's two alphabets; A through Z, and then A through Z, -- but the inner A through Z is on a small -- it has a smaller diameter; so it's a ring of letters.
它看起就像那样的东西，那个画面做的不是这么公正，这里有两个字母表，A到Z，然后A到，但是戒指内部的A到Z是在一个小直径的上面-,它有一个小的直径，所以它是一个有字母的戒指。
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We have two of them on the z-axis like this.
他们俩的z轴都这样。
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I know they have a lot of... Jay-Z, the rap star, he was there.
我知道他们有很多的……Jay-Z，饶舌歌星，他就在那儿。
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Peter's new fleet, we'll talk about his new fleet, which he oversaw and, in a very minor way, helped build himself, sails down the Don River in 1698 and takes the Turkish port of Azov, A-Z-O-V, on the Sea of Azov.
我们接下来讲讲彼得的新舰队,尽管影响不大,但他亲自监督,并且参与组建了这个舰队,舰队于1698年沿顿河顺流而下,直取土耳其的亚速港,在亚速海上
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That's it. Again, these other p dxy dyz - or the d x y, d y z, those are going to be those more complicated linear combinations, you don't need to worry about them.
同样，这些p轨道,或者，它们是一些,很复杂的线性组合，你们，不用管它。
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So what we can say is look at each of these separately, so if we start with looking at the 2 p z orbital, the highest probability of finding an electron in the 2 p z orbital, is going to be along this z-axis.
我们可以来分别看看这些图，首先来看看2pz轨道，在2pz轨道里,找到电子的最大概率，是沿着ｚ轴。
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And the reason is simply because the energy that Z we gain in terms of moving up in z, 5 so from going to z equals 4 to z equals 5, -- is actually outweighed by the energy it takes to go into this new shell, to go into this new sub shell.
原因很简单,就是因为我们通过提升，所得到的能量--从，Z，等于，4，到，Z，等于，事实上比填充到这个新的壳层,新的亚壳层，所消耗的能量更多。
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Um-hmm. So, it's going to be the y z nodal plane, or in other words, we can say it's any place where phi is equal to 90 degrees.
嗯，是ｙｚ平面，换句话说，是在phi等于９０度的面。
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So, essentially when we're talking about these equations up here, all we're doing is talking about the regular Rydberg formulas, but instead we could go back and re-derive the equation for any one electron atom, which would just mean that we put that z squared term in the front.
所以本质上,当我们讨论，这些问题时，我们说的是常规的，Rydberg公式，但对任何其他单电子原子，我们不用,从头再推到，而是仅仅把，z平方项放在前面。
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These are both z-axis.
他们俩都是z轴。
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Specifically, it's always the z that forms the sigma orbital, and the reason is at least at a minimum for this class we always define the internuclear axis as the z axis, so this is always the z axis, so it's always going to be the 2 p z's that are coming together head-on.
特别的，z总是形成sigma轨道，这是因为至少在这个课里面,我们总是定义核间轴为z轴，所以这总是z轴，所以2pz轨道总是,朝一个方向出现。
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And the convention is that when two atoms bond, they bond along the z-axis.
我们的惯例是，两个轨道成键，键轴为Z轴。
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z And what you need to remember is if the z 8 is equal to eight or greater, such as oxygen being the cut-off point, this sigma 2 p orbital is actually lower in energy than the pi 2 p orbitals, the molecular orbitals.
你们要记住如果,等于或者大于，就像O是分界点，这时sigma2p轨道,比π2p轨道能量更低。
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This is Pieter Claesz, C-L-A-E-S-Z, probably mispronounced.
这是彼得·格莱兹的作品,C-L-A-E-S-Z,我可能发音不准确
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