A.結(jié)晶裂紋 B.晶間液化裂紋 C.熱應(yīng)力裂紋 D.高溫低塑性裂紋
A.熱酸腐蝕 B.冷酸腐蝕 C.電腐蝕 D.空氣腐蝕
A.10% B.15% C.20% D.25%
A.MPa B.J/m㎡ C.J/c㎡ D.J/㎡
A.2 B.5 C.6 D.8