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. |
随便看 |
|
科学参考收录了103327条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。