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

单词	Pan-African Period
释义	Pan-African Period Encyclopedia 理学泛非期释 Pan-African Period泛非期相当于新元古代晚期至早古生代早期（相当于距今6亿～5亿年或距今9.5亿～5亿年）的地质时期。
随便看	convering belt conversation agent conversational implicature conversational language conversation analysis Conversations of a Guest in a Thatched Pavilion converse converse automorphism converse digraph converse domain converse graph converse implication converse law of contraposition converse-negative proposition converse of a coding theorem converse of a contrapositive converse of an implication converse of the theorem converse order type converse proposition converse relation converse sentence converse statement converse theorem conversion

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。