This paper emphatically introduced the heteroeneous accumulation model for formation of the Earth by reviewing the solar nebula evolution models. 本文从太阳星云演变模式八手，着重介绍地球的非均一堆积起源模式。
According to the nebular hypothesis, a cloud of interstellar dust and gas underwent gravitational contraction, eventually forming a solar nebula. 根据星云假说，星际尘埃和气体的云块经历重力的收缩后，最后形成太阳星云。
