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  1. Oxford Dictionary

    ferrous sulphate

    • n.
      a pale green iron salt used in inks, tanning, water purification, and treating anaemia.

    • noun: ferrous sulphate, plural noun: ferrous sulphates

    • 相關詞

    ferrous sulfate

    • n.
      a pale green iron salt used in inks, tanning, water purification, and treatment of anemia.

    Oxford American Dictionary