Bo Xu, Yong Xu, Jiaqing Liang, Chenhao Xie, Bin Liang, Wanyun Cui, and Yanghua Xiao. CN-DBpedia: A Never-Ending Chinese Knowledge Extraction System. In International Conference on Industrial, Engineering and Other Applications of Applied Intelligent Systems, pp. 428-438. Springer, Cham, 2017.
| 中文名 | 极轴 | |
| 外文名称 | Polar axis | |
| 定义 | 从O出发引一条射线Ox，称为极轴 | |
| 归类 | 几何 | |
| 通俗说法 | 一般把X轴正半轴作为极轴 |
| 标签 | 学科 |
| 标签 | 科学 |
| 标签 | 科学百科数理科学分类 |