“三北方向图”的概念、定义、翻译、参考文献-科学参考

单词	三北方向图
释义	三北方向图 Encyclopedia 工学地图数学要素释 sketch of three-north direction三北方向图地图上标明真北方向、坐标北方向和磁北方向关系的方向图。
随便看	elementary ideal elementary idempotent elementary integral elementary interval elementary kernel elementary Kleinian group elementary length elementary logic elementary mathematics elementary matrix elementary matrix operation elementary measure elementary method elementary method of integration elementary mode analysis，EMA elementary net system elementary notion elementary number elementary number theory Elementary on Astronomy elementary operation elementary operations on matrices elementary operator elementary partical physics elementary particle

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。