Now,what Mr.Netanyahu is doing is really eating up the land that is supposed to be the Palestinian state with more settlements, with more malls, with more confiscation of land."
VOA: standard.2009.11.16
And so what you're going to end up with is, well, let's go over that. Here is sodium and chloride.
你将以之结尾,好吧,我们跳过那个,这是钠和氯。
So, what I want to do now is, with that background in mind, I want to take this up and just open up the first few pages.
所以我想要做的事,记着这个背景,我想要打开几页小说。
Yes,it was a clarinet up there,nice and high, and then another instrument came in with What instrument was that?
对,嘹亮的高音确实来自单簧管,紧接着另一个乐器加入了演奏,这是什么乐器?
And when you solved the relativistic form of the Schrodinger equation, what you end up with is that you can have two possible values for the magnetic spin quantum number.
当你们解相对论形式的,薛定谔方程,你们最后会得到两个,可能的自旋磁量子数的值。
But think about it, if you were investing your money with someone like that, what did you end up with?
但想一下,如果你去投资,收益和这个人一样,你最后能得到什么
And for reference, incidentally, in case you ever forget what the point of some exercise was, I'll almost always comment the code up top with a quick sentence or two that reminds you what this program does.
顺便作为参考,为了避免我们可能忘记一些代码的意思,我通常会用一两个简单的句子,在上面作出注释,那样会提醒我们这个程序是干嘛的。
And perhaps unsurprisingly, what he does with his friends up until that moment is, he argues about the immortality of the soul.
也许,一点也不足为奇的是,直到生命的最后一刻,他都在和朋友们,探讨灵魂的不朽性
It's with this image of a brooding impregnation that Milton announces the presence in his poem of his most potent, what I think is the most interesting, theological innovation that he comes up with here.
正是通过这个孵伏怀孕的形象,弥尔顿在这里宣告了他在这首诗中,最具潜力,最有趣的神学新观点。
And what I am going to do is say start with this ion, add up the energy associated with the interactions between that ion and everybody else in the row and then multiply it by Avogadro's number, because that is the number of atoms there are in a row.
接下来我要从这一离子开始,加上相互作用的能量,也就是这一离子,和其它所有在这一行的离子之间的能量,再乘以阿伏加德罗常数,因为这是在一行的原子的数量。
So, what were some of the things, ideas that you came up in Israel with?
那么,你当时有哪些想法,你在以色列时想过什么?
We've formulated one particular kind of engine, and seen how we can analyze what it does, come up with relations that seem of value for efficiency and other quantities.
这是一个很典型的热机,我们来分析它是怎么工作的,然后得到效率和其它一些,有用物理量之间的关系。
For those of you who aren't familiar with this, we split up the user base by what school they go to and we make it so that people at a given school can only see the profiles and contact information of people at their school.
对此有些人可能不大了解,我们以学校为标准将用户分组,只有在同一所学校的学生,才能够相互浏览,个人资料和联系方式。
You could take the food guide pyramid and make it the reverse of what it should be and you still end up with something that people really wouldn't see very much, kids don't learn about very much, it doesn't really affect many people, so you could say that it doesn't really matter.
如果你把食物金字塔彻底扭转成另一版本,也不会怎么样,反正人们也不会过多地去关注它,孩子们也不会学它,它并不会真的影响人们的生活,因此你可以说它无关紧要
Well the first step would be to cut open the plasmid with a particular restriction enzyme, and then what if I take that same restriction enzyme and I cut up the DNA that I'm interested in.
第一步是用某种限制性内切酶把质粒切开,然后用同一种限制性内切酶,切出我想要的DNA
Roughly speaking, a sixth of the class are going to end up with A's, a sixth are going to end up with A-, a sixth are going to end up with B+, a sixth are going to end up with B, a sixth are going to end up with B-, and the remaining sixth, if I added that up right, are going to end up with what I guess we're now calling the presidential grade, is that right?
总体来说,六分之一的人会得到A,六分之一的人会得到A-,六分之一的人会得到B+,六分之一的人会得到B,六分之一的人会得到B-,剩下的六分之一,如果我没算错,这些人将会得到,传说中的"超优"成绩
Alright. So, hopefully what everyone came up with is the straight line, is that what you answered?
好的,希望你们的,答案都是一条直线,这是你们的答案吗?
So that's what we want to load up with electrons, and then see if we can remove some.
所以那个是我们,想加载电子的地方,然后看看我们是否可以移动一点。
Gee, I wonder if I could come up with a set of transitions occurring inside atomic hydrogen Just right match that what Angstrom measured back in 1853.
嘿!我想知道我是否可以想出,发生在氢原子内的,一系列的跃迁,正好符合,阿姆斯特朗在1853年测得的东西。
And what they could come up with, what they reasoned, is that there must be some intrinsic property within the electron, because we know that this describes the complete energy of the orbital should give us one single frequency.
他们想到着一定和,电子的本征性质有关,因为我们知道这个轨道的,完整描述会给出单一的频率。
So if we take this term, which is a volume term, and multiply it by probability over volume, what we're going to end up with is an actual probability of finding our electron at that distance, r, from the nucleus.
如果我们取这项,也就是体积项然后,乘以概率除以体积,我们能得到的就是真正在距离,原子核r处找到电子的概率。
So, what we say here is we need to take a step back here and come up with an approximation that's going to allow us to think about using the Schrodinger equation when we're not just talking about hydrogen or one electron, but when we have these multi-electron atoms.
所有我们这里要说的是,我们需要退回一步,做一个近似,那样可以使我们用,薛定谔方程来考虑,让我们不是仅仅在讨论氢原子或者,一个电子的时候,而是多个电子的原子。
So, let's begin with another of those scenes on 213 that Nabokov points out to us, the Kasbeam barber. Why did it take him a month to come up with the Kasbeam barber? What's going on in this tiny snippet that's so important? So here it is.
那么,我们从213页纳博科夫向我们指出的另一个,场景开始:理发师加斯比姆,为什么他花了一个月的时间,来创造理发师加斯比姆的形象呢?这个小片段里,发生了什么重要的事情呢?我们来看这里:
I wanted to show an example with real data that I computed and that's what's up on the screen.
我用真实的数据做了一个案例,请看上方的屏幕。
So, using our simple valence bond theory, what we would expect is that we want to pair up any unpaired electrons in methane with unpaired electrons from hydrogen and form bonds.
利用简单的价电子成键理论,我们预计,要把所有甲烷中没有配对的电子,和氢原子中没有配对的电子配对来形成键。
> So now that might not have felt like the fastest algorithm but think about what you could have done with that algorithm in each iteration, much like the phonebook up front here, you literally split that problem in two because on each iteration roughly half of you were sitting down and then another half and then another half.
虽然这并不是最快的算法,但如果把这种算法每次迭代,就像刚才查电话簿一样,你便将这个问题一分为二了,因为每一次迭代后只有一半坐下来,以此类推。
So what we end up with is one radial node for the 2 s orbital of hydrogen, and we can apply that for argon or any other multi-electron atom here, we also have one radial node for the 2 s orbital of argon.
那意味着它们都是径向节点,所以我们得出的结论是,氢的2s轨道是1个径向节点,我们可以将它应用,到氩或者任意一个多电子原子,对于氩的2s轨道。
So, we see is when we use the octet rule to look at fluorine molecule, we're combining two fluorine atoms, and what we end up with is an f f molecule where they're sharing two electrons, so making that covalent bond.
那么,我们看到把八隅体规则用到氟分子上,就是把两个氟原子组合起来,最终得到的氟分子中两个原子,共用一对电子,这就构成了共价键。
So you recognize patterns and then develop a model, and most desirably a quantitative model A quantitative model that explains the observations, obviously.But what Mendeleev did was he came up with a model that not only explained what we observed.
所以你们得到这些模式,发展成一个模型,和最令人向往的定量模型,一个定量模型明显地解释所有的观察结果,但是门捷列夫做的是,他提出的模型不仅解释了,我们观察到的东西。
Because once you actually push people,to pin them down, what do you mean by it,you end up with something that's either just not true, or not interesting,or not necessary, or not particularly unique to death.
因为你一旦逼问他们这到底是什么含义,得到的东西既不会是真实的,也不会是必要和有趣的,也不会是对于死亡来说独特的。
应用推荐