英语词汇“semigroup”是什么意思，“semigroup”的读音、用法及例句翻译-烛光网

词汇	semigroup
释义	sem·i·group AHD[sĕmʹē-gro͞op', sĕmʹī-] D.J.[ˈsemiːˌgruːp, ˈsemaɪ-]K.K.[ˈsɛmiˌgrup, ˈsɛmaɪ-]n.Mathematics（名词）【数学】 A set for which there is a binary operation that is closed and associative.半群：结合二元运算下闭合和结合的数学集合
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