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单词 sulphur dioxide
释义

Collins Concise English Dictionary © HarperCollins Publishers::
sulphur dioxide n
  1. a colourless soluble pungent gas produced by burning sulphur. It is both an oxidizing and a reducing agent and is used in the manufacture of sulphuric acid, the preservation of a wide range of foodstuffs (E220), bleaching, and disinfecting. Formula: SO2
    Systematic name: sulphur(IV) oxide
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