Read Edit View history 闭子集 bìzǐjí closed subset Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 闭子集/ 閉子集 bìzǐjí closed subset noun · closed subset (mathematics) 这个集合是该拓扑空间的一个闭子集。 Edit Delete References Add reference No references for this word.