“阶层”概念、定义、翻译-科学时代

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。

单词	阶层
释义	数学词汇手册阶层 level
随便看	multiobjective fractional programming multiobjective non-linear programming multiobjective optimization multiobjective programming multiobjective simplex method multi-object spectrograph multi-object spectroscopy multioccupation multioriented fibre multi-orifice multi-orifice laminated material multi-outlet assembly multi-outlet nozzle multipacting multipacting plasma multi-panel trawl multipara multipara multipara multiparachute airdrop multi-parameter multiparameter analyzer multi-parameter model multiparameter regulation multiparameter water quality probe