“官渡之战”的概念、定义、翻译、参考文献-科学参考

单词	官渡之战
释义	官渡之战 Encyclopedia 历史学官渡之战释 Battle of Guandu官渡之战中国东汉建安五年（200）曹操与袁绍争夺中原霸权的关键战役。因交战于官渡（今河南中牟东北）而名。
随便看	quadratic deviation quadratic diameter quadratic differential quadratic discriminatory analysis quadratic divergence quadratic domain quadratic dual quadratic dual problem quadratic dual space quadratic effect quadratic eigenvalue problem quadratic electro-optical tensor quadratic electrooptical tensor quadratic electro optic effect quadratic electro-optic effect quadratic element quadratic equation quadratic equation with one unknown quadratic error quadratic estimator quadratic expression quadratic extension quadratic extension field quadratic factoring method quadratic field

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。