“乐浪四郡”的概念、定义、翻译、参考文献-科学参考

单词	乐浪四郡
释义	乐浪四郡 Encyclopedia 理学乐浪四郡释 Lelang Sijun乐浪四郡中国西汉武帝元封三年（公元前108）灭卫氏朝鲜及其属国后，所置乐浪、玄菟、真番、临屯四郡的总称。
随便看	variable region variable reluctance stepping motor variable reluctive transducer variable rules variable selection variable selection for linear regression model variable separation method variable sign variables inspection variable source variable-spacing interferometer variable-spacing interferometry variable specific impulse magnetoplasma rocket variable-speed constant-frequency variable speed control moment gyro variable speed drive variable speed operation variable speed pumped storage variables quality characteristic variable-stability aircraft variable stability flight control variable stage variable star variable stator vane variable step size

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。