搜索 - 科创

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建立右手直角坐标系X,Y,Z设有两个电偶极子1,2在x轴上相隔1/4波长放置，一个在原点，一个在负半轴，其中负半轴的震动相位超前90度（只有振子和反射器的八木天线）设电磁波角频率w,电荷量q,光速c,电偶极矩

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