硫酸亚铁
[liú suān yà tiě]
Definition:
AllAll,ferrous sulfateferrous sulfate,Ferrous SulfateFerrous Sulfate,ferrous sulphateferrous sulphate,FeSOFeSO
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Modern writing inks usually contain ferrous sulfate with a small amount of an acid; on paper, they darken and bond, becoming permanent.
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