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火星比地球大还是小
更新时间: 2020-06-28 00:00:00  

火星直径约是地球的一半,体积为15%,质量为11%,表面积相当于地球陆地面积,密度则比其他三颗类地行星还要小很多。 以半径、质量、表面重力来说,火星约介于地球和月球中间:火星直径约为月球的两倍、地球的一半;质量约为月球九倍、地球的1/9,表面重力约为月球的2、5倍、地球的2/5。

关键词: 火星 地球 还是

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