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．

麻省理工公开课 - 化学原理课程节选

So, I'm now multiplying by the result of calling the size of operator, which we've seen before.

现在我乘以运算符的大小,之前我们看到的。

哈佛公开课 - 计算机科学课程节选

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

This is how you get the rules for adding a vector to another vector, then taking a vector and multiplying it by some constant.

以上这些就是矢量加法的法则,以及数乘矢量的法则

耶鲁公开课 - 基础物理课程节选

Then I'd be multiplying a float by 5, so that's a float times an int.

然后我们把这个浮点数乘以，那是浮点数乘以整型数。

哈佛公开课 - 计算机科学课程节选

You should know what multiplying a vector by a number means.

你需要知道数乘矢量的意义

耶鲁公开课 - 基础物理课程节选