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英语单词

chalcogen是什么意思

chalcogen

英['kælkədʒən] 美['kælkədʒən]
  • n.硫族元素，氧属元素（包括氧、硫、硒等）
    • 网络解释.氧族；硫属；链分支；椅型




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单词首字母

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