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【简答题】
一段由理想导体构成的同轴线,内导体半径为a,外导体半径为b,长度为L,同轴线两端用理想导体板短路。已知在a≤r≤b,0≤z≤L区域内的电磁场为: (1)确定A,B间的关系; (2)确定k; (3)求r=a及r=b面上的ρ,Js。
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