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Aviation
containing
螺 旋 扫描
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all forms
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in specified order only
Chinese
English
垂直
螺旋扫描
vertical helical scanning
螺旋扫描
spiral scan
(一种雷达扫描方式。雷达波束在垂直面内沿螺旋状路线从中线离开再回到中线。这种方式适用于目标捕获雷达,提供目标的距离、相对方位角与仰角数据)
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