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近些年来,世界工业高度发展,许多矿产尤其是燃料矿产受到各国的重视.现将收集到的几类矿产的开采量提供参考.
In recent years, the world’s industry is highly developed, and many minerals, especially fuel minerals, have received the attention of various countries. We will now provide reference to the amount of minerals that have been collected.