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四夕:[图片] {b>tX)Tep 如上图,在灰色区域频率范围内泄漏线以内没有任何模式的波通过,就说明该频率范围内的慢波区域电磁波无法通过,此为一个禁带~ (2012-11-06 15:53) jBV2]..