They demonstrated extended sensing; persistent intelligence, surveillance and reconnaissance (ISR); and manned-unmanned teaming and sent back real-time video imagery of ground targets.
它们演示了拓展传感，持续情报、监视与侦察（ISR），无人编队和发回地面目标实时视频图像等能力。
The helicopter hovered for an hour around the mountainous areas in Yanqing District and sent video images of the ground back to headquarters.
直升机在延庆山区上空飞行约1小时，并将采集到的画面传送给地面指挥部。
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