上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY Liquid L+Solid B L+SolidA TEutectic T Solid A+Solid B XEutectic A B Xg→ P X4=0.3夺 X:=0,4 E 0 D Xc卡0,3 B XB之 14xA=0.3 xB=0.4 xC=0.3 14