“petrographic period”的概念、定义、翻译、参考文献-科学参考

单词	petrographic period
释义	petrographic period [¦pe·trǝ¦graf·ik `pir·ē·ǝd] ^GEOLOGY The extension in time of a rock association.
随便看	large number hypothesis large polaron large scale large-scale convection large-scale integrated circuit double-channel duplex double-channel simplex double circulation double cluster double Compton scattering double-concave lens double-cone bit double-convex lens double-core barrel drill double-coursed double-crank press double cropping double crossover double-current cable code double-current generator double-current signaling double cusp double-cut file double-cut planer double-cut saw

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