“早白垩聚煤期”的概念、定义、翻译、参考文献-科学参考

单词	早白垩聚煤期
释义	早白垩聚煤期 Encyclopedia 理学聚煤期释 early Cretaceous coal-accumulating period早白垩聚煤期早白垩世有大量聚煤作用发生并形成有工业价值煤田的时期。
随便看	upper directed upper Dirichlet density upper end upper end of an integral upper envelope upper estimate upper eyelid upper finite group Upper-flow system upper function upper gastrointestinal bleeding upper gastrointestinal examination upper gastrointestinal hemorrhage upper girdle muscles upper half-disk upper half-martingale upper half-plane upper half-space upper harmonic upper harmonic wave upper heat and lower cold upper hemisphere upper homology upper hybrid frequency upper hybrid oscillation

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