A measuring system of the focus plane information of bigger aperture aerial camera was described.
提出了一种测量航空大孔径相机焦面信息的系统，论述了系统的测试原理和组成。
Low altitude high-shooting weapon is an integral part of the modern aerial defense system.
低空高射武器是现代防空系统的一个重要补充部分。
Low altitude high-shooting weapon is an integral part of the modern aerial defense system.
低空高射武器是现代防空系统的一个重要补充部分。
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