在此方程中，弥散项和对时间的导数为分数阶导数所代替。

In this equation, the diffusion is a fractional order derivative of time and space.

youdao

它就是位置，对时间的一阶导数。

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

youdao

它就是位置，对时间的一阶导数。

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

youdao