“essential element”概念、定义、翻译-科学时代

单词	essential element
释义	生物学词汇手册 essential element 必需元素，主要元素
随便看	system theory system thought system time system time constant system tract system truss system unit system utility device system variable system variable table system verification system volume system weakness system-wide graphical timetable system with coalition formation system with concentrated parameters system with distributed parameters system with effectively earthed neutral system with fixed terms of office system without coalition formation system without root system with root system with unilateral constraints system Ⅰ system Ⅳ

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

essential element