“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	emergency medical service system emergency medical treatment emergency monitoring on marine ecological disasters emergency monitoring system emergency monitoring technology of groundwater sudden environmental pollution accident emergency open emergency operation emergency operation mechanism emergency organization and command standards emergency parachute emergency personnel emergency plan emergency plan for pasture water supply Emergency Plan in Social Management emergency plan management emergency plans management emergency plan system emergency platform emergency platform system standard emergency policing strategy emergency pool emergency power generator emergency power supply emergency power unit emergency preparedness

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。