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单词 carborundumtm
释义

Carborundum™

noun
/ˌkɑːbəˈrʌndəm/
/ˌkɑːrbəˈrʌndəm/
[uncountable] (chemistry)
  1. a very hard black solid substance, used as an abrasive金刚砂,碳化硅(用作研磨材料)
    Word Originlate 19th cent. (originally US, as a trademark): blend of carbon and corundum
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更新时间:2026/1/26 2:47:39