I take the time derivative.

我会计算时间导数。

youdao

That's the first derivative of the position versus time.

它就是位置，对时间的一阶导数。

youdao

The second time derivative is the constant acceleration.

它的二阶导数就是这个恒加速度。

youdao

The second time derivative is the constant acceleration.

它的二阶导数就是这个恒加速度。

youdao