以下为句子列表：
英文: These greatly improve the quality of PGE abundances in the earth's crust, crustal rocks and sediments published before 1980's, and they are very important for theory geochemistry, exploration geochemistry and mine exploration of PGEs.
中文: 这种对地壳、岩石和沉积物中铂族元素丰度值的新认识，对理论地球化学、勘查地球化学甚至铂族元素矿产勘查工作都具有重要的意义。
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