For the cold protosolar accretion disc, convective instability will gradually end from the outer region to the center and from the surface to central plane.

原太阳吸积盘为冷的薄盘，盘中热对流不稳定性由外而内，由上而下地终结；

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For the cold protosolar accretion disc, convective instability will gradually end from the outer region to the center and from the surface to central plane.

原太阳吸积盘为冷的薄盘，盘中热对流不稳定性由外而内，由上而下地终结；

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