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coefficient

noun
/ˌkəʊɪˈfɪʃnt/
/ˌkəʊɪˈfɪʃnt/
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  1. (mathematics数学) a number that is placed before another quantity and that multiplies it, for example 3 in the quantity 3x系数
  2. (physics物理) a number that measures a particular property (= characteristic) of a substance（测定物质某种特性的）系数
    • the coefficient of friction摩擦系数
    3. Word Originmid 17th cent. (in the sense ‘cooperating to produce a result’): from modern Latin coefficient-, from com- ‘together’ + efficient- ‘accomplishing’.

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