“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	associated metric space associated mineral associated minimal surface associated module associated natural gas associated number associate doctor associated outcut associated pair associated point associated polynomial associated power series associated prime element associated prime ideal associated principal bundle associated quadric associated radius of convergence associated reaction Associated Research Centers for the Urban Underground Space associated residue associated ring associated separated group associated sequence associated set associated sheaf

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