“皇清职贡图”的概念、定义、翻译、参考文献-科学参考

单词	皇清职贡图
释义	皇清职贡图 Encyclopedia 历史学史料释 Qing Imperial Illustrations of Tributaries《皇清职贡图》中国清代记述海外诸国及国内各少数民族的图籍。
随便看	positive real system positive recurrent point positive recurrent state positive reinforcement positive relation positive result positive root positive root system positive rotation positive school of criminology positive selection positive self-adjoint operator positive self-regard positive semi-definite positive semi-definite form positive semi definite Hermitian matrix positive semi-definite Hermitian matrix positive semi-definite kernel positive semi definite matrix positive semi-definite matrix positive semi-definite operator positive semi definite quadratic form positive semi-definite quadratic form positive semi-definite rational function positive semigroup

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。