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April 01, 202339.二叠纪(2.98-2.51亿年前)—精简版4 minutesPlay二叠纪是古生代的最后一个纪,也是重要的成煤期。裸子植物凭借着有外壳保护,逐渐适应了干旱的环境。...moreShareView all episodesBy 地质科普April 01, 202339.二叠纪(2.98-2.51亿年前)—精简版4 minutesPlay二叠纪是古生代的最后一个纪,也是重要的成煤期。裸子植物凭借着有外壳保护,逐渐适应了干旱的环境。...more
April 01, 202339.二叠纪(2.98-2.51亿年前)—精简版4 minutesPlay二叠纪是古生代的最后一个纪,也是重要的成煤期。裸子植物凭借着有外壳保护,逐渐适应了干旱的环境。...more