v速度
原声例句
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If you took the derivative of this, you will get the velocity at time t, it would be: v=v0+at.
如果你对它求导,你就可以知道 t 时刻的速度,即,v=v0+at
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So, the two most elementary ideas you learn are what is the average velocity of an object, as then ordered by the symbol v-bar.
你们学过的两个最基本的概念是,物体的平均速度,用"v拔"表示
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If I don't show you any argument for v, it means v at time t and the subscript of 0 means t is 0.
如果我不对v做任何标志,那就表示t时刻的速度v,下标0表示的是t=0
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