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对称天线
释义
对称天线
Encyclopedia
工学
【长、中、短波天线】
释
symmetrical antenna
对称天线
在馈电点将天线分为两半,这两半的几何结构形式和尺寸完全相同的天线。如菱形天线、鱼骨形天线等。反之,则称为不对称天线。
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river-dominated delta
river dynamics
river ecosystem
river engineering
river environmental planning
river erosion and deposition calculation
river feeding
river fishery environment
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river flood routing calculation
river floods in China
river flow estimation
River God
river governing traverse planning
river gradient
rivergradient observation slope observation
river head
River Huan and Wuxie Scenic and Historic Area
river hydrology
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riverine landscape
river-lake relation
river-lake relationship
river-lake system connectivity
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