<{p}><{font _mstmutation="1" _msttexthash="41067312" _msthash="515"}>自由空间的磁场强度为<{/font}><{/p}><{p}><{font _mstmutation="1" _msttexthash="412673937" _msthash="531"}>如图所示，1区的媒质参数为ε1 = 5ε0、μ1 = μ0、σ1 = 0，2区的媒质参数为ε2 = ε0、μ2 = μ0、σ2 = 0。若已知2区的电场为<{/font}><{br/}><{/p}>