贯穿对流是恒星演化理论长期未获很好解决的理论问题。
Convection overshooting is a long standing theoretical problem in the theory of stellar evolution.
随着更多的超新星前身星得到确切证认，对大质量恒星演化理论的改进和完善将会获得有力的推动。
Reliable identification of supernova progenitors is strongly impelling to improve and refine the evolution theory of massive stars.
然而在大爆炸宇宙模型和恒星演化理论之间存在一个人们了解甚少的领域：就是由大量恒星组成而又作为宇宙基本单元的星系是如何形成和演化的?。
Between the theories of big-bang cosmology and the theory of stellar structure and theory, there is a gap still rarely understood: how do the galaxies form?
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