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。

麻省理工公开课 - 化学原理课程节选

So, let's change our graph where we now have this zero point set as the two individuals hydrogen atoms, and then we see that our h 2 molecule is at the negative of the dissociation energy, or the negative what that bond strength is.

那么让我们把曲线图中的零点能改到,两个分离的氢原子处，那我们就会看到,氢分子就是负的离解能，或者负的键的强度。

麻省理工公开课 - 化学原理课程节选

At any point on the graph you can take the derivative, which will be tangent to the curve at each point, and its numerical value will be what you can call the instantaneous velocity of that point and you can take the derivative over the derivative and call it the acceleration.

在图上的任意一点,你可以进行求导,得到曲线上每一点的切线斜率,所得到的数值,即为该点处的瞬时速度,然后你再求一次导,得出它的加速度

耶鲁公开课 - 基础物理课程节选

for the most part, if stocks have done much better if you've bought them at a point that looks cheap on that graph than one that looks expensive.

如果你做得很糟糕的话-多半情况下，you've，done，poorly，if—,如果你通过市场曲线图,在看上去比另外一个时间点便宜的时候买进它们,而股票又表现得非常好。

耶鲁公开课 - 金融市场课程节选

So what I've said so far is, a particle moving in time from point to point can be represented by a graph, x versus t.

到目前为止,我说过,一个质点随时间的连续运动,可以用一幅x-t图来表示

耶鲁公开课 - 基础物理课程节选