Rs= Rs=W= mM u ms +my 1+k L s L 2 IR =tM(1+k) k= tR一tM= tR tM tMM R M R M R M t t t t t k t t k ' (1 ) = − = = + 容量因子k计算式的推导思路： m m k m R w s M M S + = + = = 1 1 u L u L t t M s R = = u us RS =