Lead and selenium mainly exist in galena, clausthalite, and selenio-galena which occur as cell-filling of coal-forming plants and are of chemical-sedimentary origin.
铅和硒主要赋
铅矿、硒铅矿和硒铅矿中，这3种矿
胞腔充填形式出现，属于化学沉积成因。
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African lily, African mahogany, african marigold, African millet, African violet, Africana, Africander, Africanism, Africanist, Africanization,
相似单词
3G, 401(K), a,
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