The internal structure of the Moon is roughly similar to the Earth: it has a solid, iron inner core; a liquid outer core, a thick mantle, and a crust of lighter material on top.
它有一个实心的铁质内核、一个液态的外核、一层厚厚的地幔和一层较轻物质组成的外壳。
Internal structure of the Moon
原声例句
Crash Course 天文篇
中文百科
月球内部构造
月球内部构造在地质化学的特征有地壳、地函和核心，因此月球是经过分异的天体。这种构造相信是45亿年前形成不久之后月球岩浆海的部分结晶造成的。熔化外壳部分所需的能量通常被认为是来自月球在形成地月系统的大撞击之后残余在地球轨道上的物质。岩浆海的结晶会使镁铁质上升形成地函和富含斜长石的地壳。
英语百科
Internal structure of the Moon 月球内部构造
Having a mean density of 3,346.4 kg/m³, the Moon is a differentiated body, being composed of a geochemically distinct crust, mantle, and core. This structure is believed to have resulted from the fractional crystallization of a magma ocean shortly after its formation about 4.5 billion years ago. The energy required to melt the outer portion of the Moon is commonly attributed to a giant impact event that is postulated to have formed the Earth-Moon system, and the subsequent reaccretion of material in Earth orbit. Crystallization of this magma ocean would have given rise to a mafic mantle and a plagioclase-rich crust.
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- kipper的意思
- kipper的意思