Fast roping is a technique in which soldiers descend rapidly from a hovering helicopter to the ground.
快速绳降是一种士兵从盘旋的直升飞机上快速降到地面的技术。
This paper studies the detection of hovering helicopter at sea by mean of airborne early warning(AEW) radar.
提出了依托机载预警（AEW）雷达利用悬停直升机旋翼回波信号来探测海上悬停直升机目标的方案。
This paper studies the detection of hovering helicopter at sea by mean of airborne early warning(AEW) radar.
提出了依托机载预警（AEW）雷达利用悬停直升机旋翼回波信号来探测海上悬停直升机目标的方案。
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