“proterozoic eon”的概念、定义、翻译、参考文献-科学参考

单词	proterozoic eon
释义	proterozoic eon Encyclopedia 理学元古宙释 proterozoic eon元古宙介于太古宙与显生宙之间的一级地质年代单元。
随便看	official diplomatic reports official dispatch official document official document approval official documentary form official document category official document consultation official document distribution official document expression official document from the superior official document handling advice official document handling notes official document language official document layout and expression rules official document literary form official document management official document materials official document numerical expression official document paper official document processing official document processing procedure official document processing system official document proofreading official document registration official document review

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。