“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	multiple laser trackers intersection measurement multiple layer multiple life survival model multiple limit cycle multiple limit-cycle multiple linear regression multiple linear regression spectrophotometry multiple management of agricultural products multiple Markov process multiple mathematical induction multiple maximum multiple media porous flow multiple metal metal bond multiple metal-metal bond multiple meteor Multiple Mirror Telescope Multiple-Mirror Telescope multiple mirror telescope multiple missile launcher multiple mixing multiple model multiple models control multiple myeloma multiple myeloma nephorpathy multiple negation

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。