“白垩纪”的概念、定义、翻译、参考文献-科学参考

单词	白垩纪
释义	白垩纪 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）。 Biology Cretaceous白垩纪
随便看	steady-state theory of the universe steady-state value steady-state wave steady sunspot steady uniform flow in open channel steady value steady velocity steady vibration steady voltage source steady working state during exercise Stealing Imperial Horse stealth antennas stealth characteristics measurement stealth dicing stealth material stealth materials stealth penetration stealth technology stealthy absorption polymer steam steam assisted gravity drainage steam-assisted gravity drainage steam boiler steam bolier plant Steam Boy

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