Miners scrape off the topsoil and shovel golden-flecked clay into dirt pits, using acids to extract the rare earths.
矿工们挖去表层土，然后把这些闪着点点金光的粘土铲进一个灰坑内，用酸来提取出稀土矿。
This article reviews the types, synthesis method, structural characterization and applications of rare earth complexes with salicylic acids.
综述了水杨酸类稀土配合物的类型、合成方法、结构特征和应用。
The relevant progress research related to rare earth-amino acids system aslo reviewed.
该文对稀土-氨基酸体系的研究进展作了综述。
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