“丁中”的概念、定义、翻译、参考文献-科学参考

单词	丁中
释义	丁中 Encyclopedia 历史学[经济]释 household-registration system丁中中国古代为征派赋役而将编户人口按照年龄进行划分的制度。
随便看	envelope expansion flight test envelope fraud envelope function envelope glycoprotein envelope instabilility envelope instability envelope of a family of curves envelope of a family of surfaces envelope of holomorphy envelope of zero vertical velocity envelope pattern envelope power function envelope shock envelope star envelope theorem envelope velocity enveloping enveloping algebra enveloping algebra of a Lie group enveloping bialgebra enveloping cylinder enveloping function enveloping isotopy enveloping line of folds enveloping ring

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。