“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	roller compacted concrete gravity dam roller conveyor roller forming roller hockey Roller Ice Hockey roller mercerization roller mill roller oven roller pass design roller screen roller skating roller skating of Summer Special Olympics roller sorter roller-type continuous forming machine Rolle's mean value theorem Rolle theorem roll film roll-forging machine roll-formed shape roll friction coefficient Roll House rollhousing rolling rolling at the seedling stage rolling bearing

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。