“Middle Permian”的概念、定义、翻译、参考文献-科学参考

单词	Middle Permian
释义	Middle Permian [`mid·ǝl `pǝr·mē·ǝn] ^GEOLOGY The geologic epoch occurring between the Upper and Lower Permian, beginning approximately 260,000,000 years ago.
随便看	drill pipe drill point gage drill press drill rod drill runner drill sleeve drill socket drill steel drill stem drill-stem test drill string drill weave Drilonematoidea drip drip cap drip-dry drip edge dripping drop atomization dripstone drive drive chuck drive control drive fit drivehead driveless work station

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