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

单词	Ordovician Period
释义	Ordovician Period Encyclopedia 理学古生代释 Ordovician Period奥陶纪古生代第二个纪，约开始于4.85亿年前，结束于4.44亿年前。
随便看	broken sculptures at Linqu Mingdao Temple Broken Stele at Xipu broken-stone soil broken symmetry broken transit broken transit instrument Broken Windows Theory broken windows theory broken window theory Broken Wings Broker-house bromadiolone bromelin bromethalin bromic acid bromide bromide laser bromide paper bromidrosis brominated epoxy resin brominated flame retardant brominated polystyrene bromination bromine bromine-81 isotope hydrogeology

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。