“奥陶纪”的概念、定义、翻译、参考文献-科学参考

单词	奥陶纪
释义	奥陶纪 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。 Biology Ordovician奥陶纪
随便看	DOCs2129 DOCs2130 DOCs2131 DOCs2132 DOCs2133 DOCSIS doctor doctoral degree conferring institution doctoral student education doctor blade device doctor blading doctor degree Doctor Gan doctoring doctor of education doctor of engineering doctor of medicine doctor of sciences doctor of veterinary medicine doctor-patient communication doctor-patient non-technical relationship doctor-patient relationship doctor-patient technical relationship doctor practicing license system doctor's degree certificate

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。