图2 (IMAGE)

Science China Press

图2

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同位素测年样品(流纹岩)照片. (a) 样品野外照片; (b) 样品手标本照片; (c) 样品偏光显微镜照片(单偏光); (d) 样品偏光显微镜照片(正交偏光)

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