Um-hmm. So, it's going to be the y z nodal plane, or in other words, we can say it's any place where phi is equal to 90 degrees.

嗯，是ｙｚ平面，换句话说，是在phi等于９０度的面。

麻省理工公开课 - 化学原理课程节选

So you can see if you take phi, and you move it over 90 degrees, we're right here in the y z plane.

你们可以看到，把phi转到９０度，它就是ｙｚ面。

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