英语词汇first category怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	first category
释义	first category 简明释义第一类：在数学领域的一般拓扑学中，指的是一种拓扑空间的子集，从某种精确的意义上来说，它是小的或可以忽略的。网络释义 1 ?第一纲第一纲(first category), 此释义来源于网络辞典。 2 ?瘦集 ... 第一边界值 first boundary value 瘦集 first category 前件 first component ... 短语 1 referee of first category 一级裁判员 2 RALLY OF THE FIRST CATEGORY 一类拉力赛 3 first category vessel 一类容器双语例句 1 The first category is support. 第一类称为支持。 2 Displays the first category without a parent id. 显示没有父id的第一个分类。 3 The object GTS 825 is an anti-nuclear defense facility of the first category. 场所gts 825是一个第一类反核防御设施。
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