“paleo-permafrost in China”的概念、定义、翻译、参考文献-科学参考

单词	paleo-permafrost in China
释义	paleo-permafrost in China Encyclopedia 理学中国的古冻土释 paleo-permafrost in China中国的古冻土中国有确切年代证据的古冻土遗迹的最早时期约为距1950年之前的15万年。绝大多数冻土遗迹是晚更新世寒冷期以来的，对恢复古冻土和古地理环境十分关键。
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