... intrinsic magnetic moment 内禀磁矩 kinetic moment 动力矩 left-handed moment 左转力矩，反时针旋转力矩 ...
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And I want to know at this moment how much kinetic energy of rotation is stored in that disk.
我想知道现在，这个磁盘内蕴含，多少旋转的动能。
So we now have a way of calculating the kinetic energy of rotation provided that we know how to calculate the moment of inertia.
现在我们有一个计算，旋转动能的方法，如果我们知道，怎样计算转动惯量。
If I know the moment of inertia, then I know how much rotational kinetic energy there is.
若知道转动惯量我就能知道，转动动能是多少。
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