A stepwise carbochlorination-chemical vapor transport(SC-CVT) technique is proposed for separation of thorium from mixed bastnaesite-monazite concentrate.
以氟碳铈矿-独居稀土矿为研究对象,采用分步选择性碳热氯化-化学气相传输反应(SC-CVT),实现钍与其它稀土元素分离。
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These adaptive changes appear to have strengthened interindividual affiliation, increased male-male tolerance and facilitated the stepwise aggregation from independent one-male, multifemale groups to large multilevel societies, the article said.
文章说,这些适应变化似乎加强了个体间联系,增加了男-男忍度,并促进了从独立一男多女群体逐步聚型多层次社会。