“河道总督”的概念、定义、翻译、参考文献-科学参考

单词	河道总督
释义	河道总督 Encyclopedia 工学中国历代水利职官释 chief administrative officer to manage river affairs河道总督清代主管黄河、运河或海河河务的行政长官。
随便看	nulling interferometer nulling interferometry nulling optics nulling phenomenon null interval nullipotency nullisome nullisomic nullisomy nullity nullity index nullity of a critical point nullity of a graph nullity of a linear mapping nullity of a linear operator nullity of a linear transformation nullity of a link nullity of a manifold nullity of a matrix nullity of an operator nullity of a space nullity of a transformation null line null matrix null method

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。