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型號:G03-545
簡介: 觀察石灰岩地區,被含二氧化碳的流水所產生化學溶蝕作用後,地形演變情形,如中國桂林的喀斯特地形。 1.內含:a.幼年期 b.壯年期早期c.壯年期晚期 d.老年期2.尺寸:43×27cm
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