试验表明：稀土及其复合孕育剂能有效地消除微量元素的危害，改善铸铁的组织和性能。
It was showed by experiment that re and RE-containing inoculant could effectively eliminate the harmful effects of trace elements, and improve the structure and properties of cast iron.
该蛇绿岩有高的稀土和微量元素丰度，表明其来源于富集地幔。
This ophiolite has higher REE and trace element abundances, suggesting it was derived from the enriched mantle.
本文主要结合该矿床的分布与地质特征，研究了微量元素和稀土元素的地球化学特征。
The geochemical characteristics of trace and rare-earth elements are studied in conjunction with the distribution and geological characteristics of the ore deposit.
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