Bohr said that the angular momentum, mvr where n is this integer counter h over 2 pi.

波尔提及到角动量，是被量化了的，mvr，is，quantized,这里的n等于一个整数乘以h除以2π

麻省理工公开课 - 固态化学导论课程节选

When we look at this angular part, we see that it's always the square root of 1 over 4 pi, it doesn't matter what the angle is, it's not dependent on the angle.

当我们看这角向部分，可以看到它总是等于１除以４pai开根号，这和是什么角度没有关系，它和角度无关。

麻省理工公开课 - 化学原理课程节选

The indignant man loomed over Hadley, his angular face hardened with strain.

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As sighted drivers do, Mark made active use of his other senses such as sound, listening to the noise the tires generate rolling over the roads, and used the sense of angular and linear acceleration perceived from his inner ear to make judgments and adjustments to the controls of the vehicle.

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Wearing a blue baseball cap and a green sweater over a shirt and blue jeans, he looked trim and fit, but his dark, angular face showed strain and despair and bitterness.

FORBES: Dow Jones Interactive