| 释义 |
radius vectorn.（名词）- Mathematics 【数学】
- A line segment that joins the origin and a variable point in a system of polar or spherical coordinates.矢径：在一个极面或球面坐标系中连接一个固定点与一个动点的线段
- The length of such a line segment.矢径长度：这种线段的长度
- Astronomy A straight line connecting the center of the sun or another body with the center of a planet, comet, or another body orbiting around it.【天文学】 动径；向径：连接太阳或其它天体的中心与绕其运行的行星、慧星或其它天体的直线
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