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单词 sodium thiosulphate
释义

Collins Concise English Dictionary © HarperCollins Publishers::
sodium thiosulphate n
  1. a white soluble substance used, in the pentahydrate form, in photography as a fixer to dissolve unchanged silver halides and also to remove excess chlorine from chlorinated water. Formula: Na2S2O3
    Also called (not in technical usage): sodium hyposulphite, hypo
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更新时间:2025/7/23 12:55:18