腔内介质的微扰 可知 V·(E0xB)=H.V×E-EnV× J(o0fB·H-1OE·E(35-8) V·(E0xH)=H0VxE0-E.V×H0 (35-9) H+jo Eo 把上面结果合在一起考虑为 V(E0xH)+V.(ExH)=(10-0)HD·H+(0n-0)En·E (35-10)可知 (35-8)    =    −    =  −  ( ) * * * * *           E H H E E H j H H j E E 0 0 0 0 0 0  0   =   −   = −  +  ( ) * * * * * * *           E H H E E H j H H j E E 0 0 0 0 0  0 0 0 0  (35-9) 把上面结果合在一起考虑为 (  ) + (  ) = ( − )  + ( − )  * * * *         E0 H E H0 j 0 0  H0 H j 0  0  E0 E (35-10) 一、腔内介质的微扰