At the same time, differentialrotation driven through the planetary gear differential to achieve differential.
同时带动差速器旋转，并通过差速器的行星齿轮实现差速。
2
The interplay between the two leads to the formations of fluid outer core, basalt magmas, oceanic crust, and differentialrotation between the inner core and mantle.
When the motion of the basic state is the shear flow (or the differentialrotation), this property means that the unstable waves would evolve automatically into the quasi-stationary stage.