l=lvh-w ep E,=Ylnx10pMlx10snm ApM'=-ApY CM(sP) 10APM-10-APM 林邦误差公式 E= ×100% CMGDK'MYCD) △pM'=pM'ep-pM'sp MY M(sp) sp sp K' C M ' = Y' = 100% C K' 10 10 E M(sp) MY(sp) ΔpM' ΔpM' t − = − 林邦误差公式 △pM'=pM'ep-pM'sp ΔpM'= -pY' M(sp) ΔpM sp ΔpY s p t C Y' 10 ' M' 10 ' E − − − =