查询词典 countable covering

We also introduce the countable compactness and sequential compact-ness for a De Morgan algebra of topology and study the relations between any two of theseconcepts and compactness.

同理还在德摩根拓扑代数中引进了可列紧和序列紧，研究了可列紧和序列紧之间的关系以及这两种紧性与紧之间的关系。

In theory the English word "throe" is countable, though use of the word is so limited to certain fixed expressions (e.g."in his death throes") that one would be startled to encounter "a throe" in modern speaking or writing.

从理论上说，英文单词"throe，挣扎"是可数的，但这一用法极为有限，只限于某些固定用法中（如：in his death throes，垂死挣扎），以至于如果有人在口语或文字中碰到"a throe"会感到吃惊。

Later, owen[18] showed that the class of all countable undirected graphs contains a universal homogeneous object.

后来，欧文[ 18 ] 结果表明，所有数类无向图中包含一个普遍同质对象。

The investigation of universal structures can be traced back to Cantor[6] who showed that the chain is both universal and homogeneous in the class of countable linear orders.

调查普遍结构可以追溯到康托尔[ 6 ]谁表明，链是普遍的和均匀的类数线性订单。

This strategy is a departure from (and understandably so due to the increased complexity) the original one for random graphs[16] where a universal homogeneous countable graph is constructed with probability 1 in a single step (i.e., a single round of countably many probabilistic choices made independently).

这一战略是背离（和理解的原因是越来越复杂）原来的随机图[ 16 ]在一个普遍的同质数图1构造的概率在一个步骤（即单轮数许多概率选择独立）。

Are countable sets:Λ-Γ,〓-Γ are either empty or countably infinite, where Γ denotes the set of γ-limit points of f; tree map's depth of attracting center is finite and the attracting center is Γ provded all the branching points are periodic points. In chapter Ⅲ. we discuss certain relationship between isolated chain recurrent point and eventually periodic point of some continua.

主要利用树的特殊偏序关系证明了：不在周期点集闭包中的ω极限点都有无限轨迹；Ω-〓，Ω-Γ为可数集，Λ-Γ，〓-Γ或为空集或可数无限，其中Γ为f的γ极限点集；当分支点都是周期点时，连续树映射的吸引中心深度有限，且吸引中心就是Γ。

If my missing can countable, it must be like stars in the sky, shining and endless; if my missing can describable, it must be like rainbow, brilliant and incomparable; if my missing can expectable, it must be like the heaven, vague and reachless.

如果我的思念可以计算，那么它一定像满天的星辰，闪烁不尽。如果我的思念可以描绘，那么它一定像七彩的虹，绚烂无比。

Yang has ever told me that the ones who can speak out "regretless" can be countable, so I always say "I am the lucky one", what I choose is right, up until now all are witnessed

Yang曾经对我说能真正说得出'无悔'这词的人真的没几个。所以我总觉得自己很庆幸，自己走的路是对的，走到了最后这一切都有在见证着……。

In this paper, the concepts of twelve countable compactness in symmetric topological molecular lattices are introduced.

在对称拓扑分子格中引入12种可数紧性的概念，着重指出了它们在极不连通的对称拓扑分子格中的内在联系。

The plural form of English countable nouns is also a morpheme which has allomorphs, namely,- s and – es .

的复数形式英语可数名词也是一个语素已allomorphs ，即- S和-胚胎。

Smoking cigarettes adds to the Computer Desk Computer manufacturer computer mouse Computer Computerized collar knitter machine Conduit Bodies construction board Container Bag Control Arm Cooking Thermometer general levels of air pollution as well as damaging our health.

吸烟不仅对健康有害，而且增加空气污染程度。香烟雾含有多种有害物质：不仅有致癌化学物质、有某种能阻止氧气进入血液的气体，还有引起血压增高、心速加快的被称为尼古丁的物质。

He is one of my favorite actors.

他是我最喜欢的男演员之一。