“永定河志”的概念、定义、翻译、参考文献-科学参考

单词	永定河志
释义	永定河志 Encyclopedia 工学〔中国水利史文献〕释 Records of Yongding River《永定河志》中国清代记载中国永定河的志书。
随便看	triangular inequalities triangular interferometer triangular irregular network model triangularization triangular map triangular matrix triangular mesh triangular method triangular muscle triangular net triangular number triangular operator algebra triangular partial sum triangular patch triangular pattern triangular point triangular prism triangular pyramid triangular reaction triangular sum triangular summation method triangular surface triangular symmetric curve triangular symmetry group triangular system of equations

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。