序列式紧空间 sequentially compact: 顺序紧密的sequentially compact set: 列紧集sequentially complete space: 序列完备空间compact space: 紧集; 紧空间; 紧性; 紧致豪斯多夫空间; 紧致集合; 紧致空间; 紧致性sequentially: 继续地下载手机词典可随时随地查词查翻译