A.68% B.74% C.58% D.64%
A.共晶转变 B.结晶 C.再结晶 D.重结晶
A.较大 B.较小 C.不宜过大 D.不宜过小
A.α-Fe,铜 B.α-Fe,钒 C.γ-Fe,铜 D.γ-Fe,钒
A.凝固 B.结晶 C.再结晶 D.重结晶