Moreover, The authors inverted three dimensional global mantle density (anomaly) combining geoid data and seismic tomography data by means of damping least square method.

另外，采用阻尼最小二乘方法，利用全球地震层析成像资料和大地水准面异常资料联合反演了三维全球地幔密度异常。

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A titanic impact could have stripped away a portion of its rocky mantle, leaving behind a metallic core whose density is out of proportion with the original ratio of rock to metal.

超大碰撞可能剥去了水星的一部分岩石地幔，留下了一个金属核心，其密度与原来的岩石与金属的比例相比大得不成比例。

youdao

The Moon's mean density is much lower than that of Earth but is about the same as that of Earth's mantle.

月球的平均密度比地球低得多，但与地球的地幔密度大致相同。

youdao

Unlike any other asteroid known today, Vesta has an iron core surrounded by layers of mantle rock and crust, similar to Earth and Mars, preliminary gravity and density measurements suggest.

WSJ: Asteroid Vesta Gets a Close Study