The ray theory of geometric optics was applied to visually investigate the propagation of quasi stationary waves in time mean basic flow and interpret the zonal nonhomogeneity.
应用几何光学中的射线理论，直观地讨论了准定常波在时间平均基流中的传播，解释了定常波传播的纬向非均匀性。
When the motion of the basic state is the shear flow (or the differential rotation), this property means that the unstable waves would evolve automatically into the quasi-stationary stage.
当基态运动为剪切流(或较差旋转)时，这一性质将使不稳定波自动演化到准稳阶段。
When the motion of the basic state is the shear flow (or the differential rotation), this property means that the unstable waves would evolve automatically into the quasi-stationary stage.
当基态运动为剪切流(或较差旋转)时，这一性质将使不稳定波自动演化到准稳阶段。
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