q1 So let me just rewrite that as, I just want to divide by q1 everywhere.

分子分母同时除以，现在我写的这些。

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The period, that's right. So, it's going to take one period to move that long. And another way 1 we can say period is just 1 over nu or 1 over the frequency So, now we know both the distance traveled and the time the elapsed.

还是？周期，对的,它需要一个周期的时间,另一种说法是周期是,除以nu，也就是1除以频率,现在我们同时知道了。

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