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词汇 halogen
释义

halogen

noun
/ˈhælədʒən/
/ˈhælədʒən/
(chemistry化学)
  1. any of a set of five chemical elements, including fluorine, chlorine and iodine, that react with hydrogen to form acids from which simple salts can be made. Halogens, in the form of gas, are used in lamps and cookers.卤素
    Collocations DictionaryHalogen is used before these nouns:
    • bulb
    • lamp
    • light
    词源mid 19th cent.: from Greek hals, halo- ‘salt’ + -gen.
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