“Lower Permian”的概念、定义、翻译、参考文献-科学参考

单词	Lower Permian
释义	Lower Permian [`lō·ǝr `pǝr·mē·ǝn] ^GEOLOGY The earliest epoch of the Permian period of geologic time, extending from about 275- to 260,000,000 years ago.
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