Debris on the surface of Iapetus has a similar composition to material known to exist on Phoebe.

“土卫八”表面的碎片与已知存在于“菲比”上的物质的成分相似。

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Material compoSition, compacting method and die structure of P/M bush with step and prismatic surface on cylinder were outlined.

介绍带台阶并在圆柱体上有三棱面的粉末冶金村套的材料配方、压制方法和模具结构。

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There is evident diversity in material composition of slide surface of bulking landslide, due to the difference of failure patterns.

溃屈型滑坡由于滑动破坏方式的不同，滑面的物质组成有明显的差异。

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Observations of the material coating the dark face of Iapetus indicate it has a similar composition to the surface material on Phoebe.

BBC: New ring detected around Saturn

Since cosmic radiation alters surface composition, Curiosity can drill into rock to extract pristine material from below.

CNN: Curiosity opening Martian frontier?