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The mineralization system was a semi-closed state in the main metallogenic stage.
在主要成矿阶段，体系处于一种半封闭状态。
youdao
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P. to present, a warm semi-humid and semi-arid stage.
至现在温暖半湿润、半干旱阶段。
youdao
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P. to present, a warm semi-humid and semi-arid stage.
至现在温暖半湿润、半干旱阶段。
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