定义：五( 为偏摩尔量 等TPdZ= dng B=1 =Z dn+Z dng+x dnk dz=∑Zgdnp B=1 12 12 定义：Z B = T P nC B nB Z    , , ( ) 为偏摩尔量 等 TP dZ= T P nC B K B nB Z   =   , , 1 ( ) dnB = Z1 dn1 +Z2 dn2 .+ZK dnK dZ = B K B Z B dn =1