We also obtain the variation of the radialdispersion of velocities with r through the stability of the density wave in three-dimensional dishlike galaxies.
同时，从三维盘状星系密度波的稳定性讨论推出了径向速度弥散度的变化规律。
2
We analyse the common radial and time Schrdinger equation using finite differential approach, get dispersion equations of two kinds of Schrdinger equation by finite differential approach.