短语词组短語ferrous sulfide scale 硫化亞鉄垢ferrous sulfide stain 硫化亞鉄斑;硫化斑ferrous sulfide fes 硫化亞鉄ferrous sulfide 1 硫化亞鉄Ferrous sulfide antiflaming cleaning agent 硫化亞鉄阻燃清洗劑 返回 ferrous sulfide