固相部分互溶的相图的变化 liquid liquid liquid +S solid S1 S2 solid S1+S2 S1+S2 S1+s2 B 固相部分互溶的相图的变化 s1+s2 liquid solid l+s T A B s1+s2 solid l+s liquid T A B s1+s2 liquid T A B s1 s2