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Air defense
containing
半波 束宽度
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俯仰
平面内
半功率波束宽度
beamwidth in the elevation plane
半功率点波束宽度
half-power beam width
半幅度波束宽度
half-amplitude beam width
方位
平面内
半功率波束宽度
beamwidth in the azimuth plane
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