各种质量的恒星的演化，均以流体力学的时间尺度进行。
Evolution of stars of all masses takes place on a hydrodynamic time scale.
通过计算机模拟技术，对短程力步长在星系中的分子云和恒星的演化中的作用做了详细的研究。
The effect of the step for the short self-gravitation of molecular clouds is studied by means of numerical simulation.
现在，地质证据和恒星演化模型之间这种明显的矛盾被称为“微弱年轻太阳悖论”。
Now, this apparent contradiction between geologic evidence and the stellar evolution model became known as the faint young Sun paradox.
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