稀土地球化学演化趋势
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ree evolutionary trend
自由演化趋势
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Their REE abundance increases progressively and their light and heavy REE fractionations also have a general evolutionary trend of becoming more and more marked.
其REE丰度逐渐增高，轻、重稀土分馏程度表现为愈趋显著的总体演化趋势。
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