velocity change的用法和樣例：
例句
- She said that our energies and rates of vibratory change are so rapid now that we see a series of rapid actions quickly.
她說(shuō)我們的能量和振動(dòng)的速度變化如此之快以致我們現在看到了一系列敏捷迅速的行動(dòng)。 - By comparing two successive displacements of the ball, we can find the change in velocity in the corresponding time interval.
比較球的先后相繼的兩個(gè)位移，就可求出對應于這段時(shí)間內的速度變化。
