A.氫脆破壞和選擇性腐蝕 B.硫化物應(yīng)力腐蝕開(kāi)裂和湍流腐蝕 C.硫化物應(yīng)力腐蝕和沿晶腐蝕 D.氫脆和硫化物應(yīng)力腐蝕開(kāi)裂
A.65℃ B.75℃ C.83℃ D.93℃
A.50ppm B.150ppm C.200ppm D.2000ppm