But the nymphs in all of their sensuous beauty, with "flow'r-inwov'n tresses," they have to experience the same fate.
但是年轻女神很美丽,但头发被扯断了“,她们不得不经历同样的命运。
because some sounds, like the 'R's here are very different from Americans and from other languages.
因为一些发音听起来,比如“R”跟美式英语,或者其他语言非常不一样。
It refers solely to trees, and Vallombrosa is the place "where th' Etrurian shades / high overarch't imbow'r."
这个比喻指的就是树木,地点是瓦隆布罗萨,“在瓦隆布罗萨,厄特鲁利亚的光辉逐渐暗淡“
R/Cv OK, so that means that this is really instead of -1 R over Cv. it's really gamma minus one.
现在,变成了γ
And when we define that as r being equal to zero, essentially we're multiplying the probability density by zero.
当我们定义r等于0处,事实上是把概率密度乘以0.
So I got an r- I'll do it the other way around.
我有一个右,我还是反过来吧
So under the R group there we've got positive, happy, secure.
组下面我们写了积极,愉悦,安详
We notice that the value of E at r naught is negative, as it should be. It's a negative number.
我们主要到在r圈时E的值为负,和它本来的值一致,是一个负数。
But since sine square plus cosine square is 1, you'll find this vector has a fixed length R.
但是由于正弦和余弦的平方和为1,你会发现这个矢量模长恒等于 R
Some languages like English has a-- have a distinction between 'l' and 'r.' Other languages do not.
某些语言,如英语,在"l"和"r"之间是有差别的,其他语言则没有
There's also this backslash R. Anyone know what backslash R is?
这还有\r,谁知道\r代表什么?
Let me just solve this for--let's solve x1 for r.
现在我们先解出用r表示x1的关系等式。
R So let's get rid of R in this expression here.
利用这个式子,我们就可以消去。
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。
So we know that we can relate to z effective to the actual energy level of each of those orbitals, and we can do that using this equation here where it's negative z effective squared r h over n squared, we're going to see that again and again.
我们知道我们可以将有效电荷量与,每个轨道的实际能级联系起来,我们可以使用方程去解它,乘以RH除以n的平方,它等于负的有效电荷量的平方,我们将会一次又一次的看到它。
R They're related through the gas constant.
理想气体常数。
And then we can take the derivative with respect to temperature, it's just R over molar volume minus b.
这样我们求,压强对温度的偏导数,结果等于R除以摩尔体积V杠减去b的差。
So, for example, if I have a sodium ion over here, and I have a chloride ion over here, where the distance from center to center r I'm denoting as r, this is nucleus to nucleus separation.
所以,比如这有一个钠离子,和一个氯离子,它们中心与中心间的距离,我把它设为,这是原子核和原子和的间距。
p1V1/R That p2 V2 over R, and then I have p1 V1 over R, the R's cancel out.
就是p2V2/R除以,两个R消掉了。
R is going to be a fix number R times You don't know what it is right now.
等于一个常数 R 乘以,你现在还不知道它是多少
You don't need Born repulsion at 2 r naught.
我们不需要在r等于2r圈处的Born力。
So we know it's moving on a circle of radius r.
因此这个质点始终在做半径为 r 的圆周运动
And he said, I think it's J.R. Hicks.
他说,应该就是J·R·希克斯
We've got one vector which is R.
我们已有的一个矢量,位矢 R
So it's minus R T1 dV over V, right?
那么这是-RT1,dV/V,对吧?
That should make sense, right, because they're only dependent on r.
这很好理解,对吧,因为它们只和r有关。
Then we go negative and we go through zero again, which correlates to the second area of zero, that shows up also in our probability density plot, and then we're positive again 0 and approach zero as we go to infinity for r.
并且再次经过,这和,第二块等于0的区域相关联,这也在,我们的概率密度图里反映出来了,然后它又成了正的,并且当r趋于无穷时它趋于。
That's the R.
相匹配的就是要找的 R
I've been using the blackboard a little ad hoc here, but suppose I neaten things up here now and present this rectangle is let's say R RAM, the memory inside of your computer.
我在这里特别地使用这块黑板,假如我整理这些东西,把它们呈现,这个长方形,假如说就是内存,你电脑的内存。
So that's why we have this zero point here, and just to point out again and again and again, it's not a radial node, it's just a point where we're starting our graph, because we're multiplying it by r equals zero.
这就是为什么在这里有个零点,我需要再三强调,这不是径向零点,他只是我们画图的起始处,因为我们用r等于0乘以它。
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