principal point
短语词组
- principal neutral point [数]主中心点
- principal triangulation point 一等三角点
- principal vanishing point [测][摄]主合点;主灭点
- principal object point 物方帚
- principal -point assumption 假定主点
- principal focal point 主焦点
- principal control point 主要控制点
- anterior principal focal point 前主焦点
- posterior principal focal point 后焦点 返回 principal point