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词汇
null-set
释义
null-set
英'nʌls'et美'nʌls'et
基本
英英
例句
n.
零集
⁵⁰
;空集
⁵⁰
名词 null set:
a set that is empty; a set with no members
用作名词
The null set is any set subset.
空集是指不含任何元素的集合,空集是任何集合的子集。
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更新时间:2025/4/2 5:30:49