ip RT 或V=∑/ v-n,RT RT V1+n2+…)RT nRT 机邵学电國图 =qB-称为B的体积分数 pB PB -pBpV = V1 + V2 +  p n RT V B B = = B 或 V VB p nRT = = + + p n RT p n RT V 1 2 B B = B = n n V V —称为B的体积分数 pB = B p V V x p p B B B B = = = , ( ) p RT = n1 + n2 +