closed sets翻译

closed sets的基本解释

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封闭集：在数学中，一个集合的所有极限点都包含在该集合内的集合。

例句

Regular order homomorphic mapping and regular continuity concepts are introduced by concepts of regular closed sets in LF topological spaces.利用正则开（闭）集引入LF拓扑空间之间的几种正则序同态和几种正则连续性，并讨论了它们的性质及其相互关系。
In fuzzy topological space, some sets are not closed sets, but they display some characteristics of clsed sets on some stratiform, if is so-called stratiform closed set.在模糊拓扑空间中，有些集合本身并不是闭集，但在某些层次上它却表现出闭集的特性，这就是所谓的层次闭集。
The dam must be closed before the rainy season sets in, or all our Labour will be lost.大坝一定要在雨季开始以前合拢，否则就会前功尽弃。《新英汉大辞典》

短语

system of closed sets 数 闭集系
family of closed sets 数 闭集族
gcd-closed sets 最大公因数闭集
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