“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	quadrantal triangle quadrant angle quadrant detector quadrant electrometer Quadrantid meteor shower Quadrantids quadrant of a circle quadrant relation quadrant spherical triangle quadrant unit quadraphony quadrasonics quadrat quadrate quadrate-articular jaw joint quadrate bone quadrate muscle quadrate tubercle quadratic quadratic algebra quadratically convergent method quadratically integrable function quadratically summable function quadratic analysis quadratic approximation

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。