And we can calculate that with the formula that we used, which was just n minus l minus 1 equals the number of nodes.

这个我们可以用我们以前用过的那个公式来计算，也就是节点数等于ｎ减去ｌ减去１

麻省理工公开课 - 化学原理课程节选

Again we can look at this in terms of thinking about a picture this way, in terms of drawing the wave function out on an axis.

同样我们可以,用这个图像来考虑，从画轴上的波函数来考虑。

麻省理工公开课 - 化学原理课程节选

So now we have this derivative, in terms of physical quantities, things that we can measure.

现在我们得到了这个导数,它可以用实验可测的与。

麻省理工公开课 - 热力学与动力学课程节选

Again as I said this is my version of it, but you can see, every one of the examples we've used so far has that pattern to it.

形成了迭代的思想，我还是想用我的话，来表达表达，但是你们可以看到,我们讲过的每个例子都用到了这个模式。

麻省理工公开课 - 计算机科学及编程导论课程节选

This is just a little inelegant and so one of the things we'll introduce early on is this idea of abstraction or design whereby if you wanna represent the ideas of 0 and 1, true or false, well, let's give them a synonym like true or false.

这么说有点粗野,我要接着讲的是这种抽象的思想,或者用这个来描绘设计出,真和假的思想，我们可以给真假各指定一个同义词。

哈佛公开课 - 计算机科学课程节选

So now in this problem, we can do something slightly different, and let's use this expression here,and I will do that, then I'll stop for today.

对于这个问题,我们可以稍微做点变化,让我们用这个式子,就是这样,今天就讲到到这里

耶鲁公开课 - 基础物理课程节选

As we do these little clicker poll things you can tell me if you find it helpful or not, then we can decide how to continue --whether to continue them in the future.

我们用表决器做这个小测试的同时,大家可以告诉我你们觉得这有没有帮助,然后我们再决定以后是否继续用

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So taking advantage of the fact that we know S1 is equal to S2 I can simplify things by making S1* equal to S2*.

我们利用S1=S2这个等式,这样用S1*=S2*可以化简了

耶鲁公开课 - 博弈论课程节选

Therefore, mathematically at a given time t, we can trade t for v and put it into this formula.

因此,从数学角度来说,在给定的时刻 t,我们可以用 v 来表示 t,并代入这个式子

耶鲁公开课 - 基础物理课程节选

In addition to that, we have that epsilon nought value, remember that's the permittivity constant in a vacuum, and basically that is what we use as a conversion factor to get from units. We don't want namely coulombs to units, we want that will allow us to cancel out in this equation.

这是电子的电荷，此外，我们有epsilon零，记住这是真空的介电常数，这是我们用来转换单位的转换常数,我们不想用库伦单位，我们希望这个可以在方程中约去它。

麻省理工公开课 - 化学原理课程节选

So what else can we do with this version?

用这个版本我们是否可以做些其他的呢？

哈佛公开课 - 计算机科学课程节选