“Cretaceous Period”的概念、定义、翻译、参考文献-科学参考

单词	Cretaceous Period
释义	Cretaceous Period Encyclopedia 理学中生代释 Cretaceous Period白垩纪中生代最后一个纪（第三个纪）。约开始于1.37亿年前，结束于0.65亿年前。白垩纪形成的地层称白垩系（Cretaceous System）。
随便看	point of rarity point of rectification point of regular type point of rest point of sale point-of-sale machine point of sale system point of sale system, POS point of self-intersection point of self-tangency point of semicontinuity point of sight point of spectrum point of striction point of strong convexity point of subjective equality point of support point of symmetry point of tangency point of termination point of triangulation point of uniform convergence point of view pointolite point-open game

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