专业释义英英释义
Empty set
- abstract: In mathematics, and more specifically set theory, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories assure that the empty set exists by including an axiom of empty set; in other theories, its existence can be deduced.
以上来源于: WordNet
双语例句原声例句权威例句
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You can remove the line entirely or leave an empty set of square brackets.
可以完全移除整个行，或者只留下方括号空集。
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Start from scratch: Start with an empty set of conditions and add your own.
从头开始：从一组空的条件开始并添加您自己的条件。
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What we obtain is that searching with single word (single term) is an empty set.
我们得到的是单个词的搜索（单项）是空集。
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Possibly an empty set of constraints.
约束条件得出的也可能是空值。
应用推荐
$firstVoiceSent
- 来自原声例句