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X-45A无人战斗机的首飞标志着美国军用无人机发展过程中的一个新里程碑。美国空军的无人机发展代表看美国军用无人机发展的主流。本文概括了美国无人机发展的特点和历程
The first flight of the X-45A unmanned combat aircraft marks a new milestone in the development of the U.S. military UAV. Representatives of the U.S. Air Force’s UAVs are looking at the mainstream of the U.S. military UAVs. This article outlines the characteristics and history of UAV development in the United States