A.雙金屬腐蝕 B.氫致開(kāi)裂 C.硫化氫點(diǎn)蝕 D.金屬腐蝕穿孔
A.0.1~0.5% B.0.5~0.8% C.0.8~1.2% D.1.2~1.5%
A.100ppm B.300ppm C.500ppm D.700ppm