“河防令”的概念、定义、翻译、参考文献-科学参考

单词	河防令
释义	河防令 Encyclopedia 工学〔中国历代水利法规〕释 Decree on River Management of Jin Dynasty《河防令》中国金代关于黄河、海河水系诸河的河防修守法规。是中国最早的一部防洪行政法规。
随便看	closed under multiplication closed universe closed walk closed world assumption closed-world assumption closed wound of neck close eigenvalue close embedding close encounter close hypersurfaces close loop control closely coiled arm closely coupled state Closely Observed Trains Closely Watched Trains close matrix closeness close-packed direction close-packed plane close-packed structure close packing close path Green function closer close-range photogrammetry close reading

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。