也许你看不到这里的坐标，但是这里的坐标真的是根号3，根号。

Maybe you cannot read the coordinates, but the point that 3 I have here is indeed root three, root three.

youdao

现在我们有两个候选答案，两个根号,和2个负根号。

Now we have two candidate points which are these two points, 3 root three, root three or negative root 3 three, negative root three. OK.

youdao

So, once we figure out what our probability of backscattering is, we'll just raise that to the 1/2, and we'll multiply that by 12 . 20 centimeters.

所以一旦我们,知道了散射概率，我们开根号。

麻省理工公开课 - 化学原理课程节选

If I pick an angle of 60 degrees, these are some numbers like half and root 3 over 2.

要是我选择一个 60°的角,上面的系数就会是二分之一和二分之根号三

耶鲁公开课 - 基础物理课程节选

If you had one negative number in it, then the product would be a negative number and, if you took a root of that, then you might get an imaginary number.

如果这当中有一个负数,乘积就会变成负的,如果你对一个负数开根号,你就会得到一个虚数

耶鲁公开课 - 金融市场课程节选