单词 半群 例句 DEFINITIVE EXAMPLES 权威例句〔semigroup〕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美国传统 英语例句辞典收录了559068条英语例句在线翻译词条,基本涵盖了全部常用单词及词组的例句翻译及用法,是英语学习的有利工具。 相关内容:“半翅目昆虫”例句“半翅目”例句“半缕”例句“半统鞋”例句“半统靴”例句