“Dushan Dayuhai”的概念、定义、翻译、参考文献-科学参考

单词	Dushan Dayuhai
释义	Dushan Dayuhai Encyclopedia 历史学代表性器物释 Dushan Dayuhai渎山大玉海中国元代代表性玉器。
随便看	unit operator unitor unit permutation unit point unit pole unit polydisc unit production unit production plan unit project unit pulse function unit pump system unit radius unitransitive graph unit ray unit representation unit resolution unitriangular matrix unit ring unit risk quick sort method unit root problem unit root test unitrope unit sampling response unit sampling sequence unit security sector

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。