axis of sight

• 视轴

axis of sight的用法和样例：

例句

1. For achieving large-scale space photoelectric tracking, the axis error of the new three-axis gimbal with collimation axis eccentricity was studied.
   摘要本文分析了实现大范围空间光电跟踪的视轴偏心三轴跟踪机架的轴系误差。