Again, we have to use now the parallel axis theorem.
现在我们要用，平行移轴定理。
The Parallel axis theorem of rigid body is verified with physical pendulum.
利用复摆验证了刚体的平行轴定理。
And now there is a theorem which I will not prove, but it's very easy to prove, and that is called the parallel axis theorem.
这个公式，我不会再验证了，但它很容易证明，它称为，平行轴定理。
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