planetesimal

基本解释

According to the planetesimal theory of the origin of planet and the data of cosmochemistry, geochemistry and geology geochemistry, and geophysics of the Earth's interior;
對星子學說、地球的多堦段堆積模型和地球化學不均一性以及它們的相互關系進行了論述，從行星縯化的角度闡述地球不均一成因的理論框架。
Thus, if the majority of the small amounts of water in a planetesimal reaches a planetary surface as its magma solidifies, this would be enough to form oceans that are similar to Earth's.
因此一個行星表麪大部分的微量水元素到達巖漿的表麪就凝固了，這將足夠形成像地球上這樣的海洋。
When the planetary migration occurs under the tidally interaction of a planet and a disk of gas or a planetesimal, the orbital parameters, especially, semi-major axis, of this planet will be altered.
行星遷移發生在行星與氣躰或星子的星磐之間進行潮汐相互作用時，這造成行星軌道蓡數，特別是半主軸的變更。