“history of Haihe River conservancy”的概念、定义、翻译、参考文献-科学参考

单词	history of Haihe River conservancy
释义	history of Haihe River conservancy Encyclopedia 工学中国水利史释 history of Haihe River conservancy海河水利史海河流域兴水利、除水害的历史。
随便看	parabolic method parabolic metric geometry parabolic mirror parabolic modular form parabolic motion parabolic net parabolic net of circles parabolic net of lines parabolic net of spheres parabolic operator parabolic orbit parabolic parabola parabolic partial differential equation parabolic pencil parabolic pencil of circles parabolic pencil of lines parabolic pencil of rays parabolic pencil of spheres parabolic perspectivity parabolic plane parabolic point parabolic potential parabolic quadratic hypersurface parabolic quadratic surface parabolic radio telescope

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。