optical key光学密钥opticaladj.视觉的；光学的optically detected ESR光学检测电子扫描雷达optical data digitizer光学数据数字化器optical fiber data bus光纤数据总线Optical Reference Unit光学基准装置optical current sensor光学电流传感器optical recording disk光记录盘optical planar circuit平面光路optical pulse counting光脉冲记数optical measuring unit光学测量装置optical resolu- tion拆分

1. This paper discusses the ptecision analysis, caiculation methods and advantages of telemeter curve widely used in optical sights foranti-tank and anti-armoured weapon systems.
   本文介绍广泛应用于反坦克反装甲直射武器系统的测瞄合一光学瞄准镜卡距曲线测距精度的分析与计算方法及其优越性。