These planets and their surfaces may be heavily modified by the last, big collision they experience (e.g. the largely metal composition of Mercury or the Moon).
这些行星最近所经历的大碰撞，会改变他们和他们的表面。
The modified bentonite has better qualities and ability of decolorization, sweeten and removing heavy metal cations and aromatic compounds and hard biodegradable harmful organic compounds.
改性膨润土可去除水体中的重金属离子、芳香族化合物、有毒难生物降解有机物，还具有脱色、脱磷、除臭等作用。
In this thesis, the studies of the metal complexes of modified amino acids have been reviewed in detail.
本论文对修饰氨基酸金属配合物的研究情况进行了较详细的综述。
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