释义 |
nebular hypothesisn.(名词)- A theory of the origin of the solar system according to which a rotating nebula cooled and contracted, throwing off rings of matter that contracted into the planets and their moons, while the great mass of the condensing nebula became the sun.星云假说:太阳系统起源的学说,一个转动的星云冷却后收缩,脱离出许多圈的物体,这些物体收缩成行星及其卫星,而最大的收缩星云方形成的天体成为太阳
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