μ=μ1(T)+RTLOP, dμ=RTdLnP, g-l平衡：dμ1=RTdLnP dμ82=RTdLnP2 VdP=n1dμ+n2dμ2 =n RTdLnP+nRTdLnP V dp=X dlnp+X,dlnp (n +n)RT VdP-X.dinP+X:din V8 P16 μ1 =μ ° 1（T）+RTLnP1 dμ1 = RTdLnP1 g - l 平衡：dμl 1 = RTdLnPl 1 dμg 2 = RTdLnPg 2 V l dP=n1 dμ1 + n2 dμ2 = n1 RTdLnPl 1 + n2 RTdLnPg 2 1 1 2 2 1 2 ( ) dP X dLnP X dLnP n n RT Vl = + + dP X1 dLnP1 X2 dLnP2 V P V g l = +