The bottom line of the section specifies the size of the smallest star circle which will be displayed on the map.
这部分的下面一行指定了要绘制在星图上最小恒星圆的尺寸。
2
Any star brighter than this magnitude will be drawn on the map using the largest circle.
任何亮于这个星等的恒星都会用这个最大的圆形绘制在星图上。
3
Based on the theory of conformal map, map model is built for planar parametric circle, rectangle and polygon regions. The boundary of parametric region rests with the need of tool path planning.