“至正河防记”的概念、定义、翻译、参考文献-科学参考

单词	至正河防记
释义	至正河防记 Encyclopedia 工学〔中国水利史文献〕释 Records of Water Conservancy on the Yellow River during the Zhizheng Era《至正河防记》关于中国元代至正年间黄河河防工程的技术总结的著作。
随便看	polygon-circumscribing constant polygon clipping polygon construction polygon density polygon diagonal polygon diameter polygon division problem polygon edge polygon equivalent by dissection polygon fractal polygon-inscribing constant polygon intersection polygonization polygon mapping polygon of seventeen sides polygonometry polygonous polygon over a monoid polygon slicing polygon tessellation polygon tiling polygon triangle picking polygon triangulation polygon vertex polygram

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。