查询词典 dense subset

An ecology-epidemic model which takes into account the effective contact rate relying on the total number of persons is proposed and the expression of the threshold value R0 is extracted on the invariant subset.

研究了具有依赖于总人数的有效接触率的生态-传染病模型。建立了一个具有依赖于总人数的有效接触率的模型，在模型的不变子集上先求出阈值R0的表达式。

Under some conditions, we prove that random nonuniformly exponential dichotomy actually imply random uniformly exponential dichotomy. And, using the normal Lyapunov exponents, we also obtain a sufficient condition under which a random compact and invariant subset is a random forward attractor. This is a generalization of the results of Ashwin\'s.

在一定条件下，我们证明了随机非一致指数二分性蕴含着随机一致指数二分性，同时，利用法向Lyapunov指数，我们还给出了一个紧致的随机不(来源：A5cBc765C论文网www.abclunwen.com)变集能成为随机吸引子的一个充分性条件，推广并改进了Ashwin的一些结果。

Last but not least, while happens to be an ordered group, the paper gets the conclu-sion that Ωexists a largest closed θ-invariant proper subset if and only if there exists a smallestsemigroup of G strictly containing G_+.

当是一个序群时，文章得到结论：Ω存在最大θ-不变闭的真子集当且仅当存在一个严格包含G_+的G的最小半群。

The documentation will recommend that you use the least common denominator as your source, i.e., since Silverlight is a subset of WPF desktop if we code in Silverlight it will be supported on the Desktop side.

帮助文档建议你使用最通用的作为你连接源目标，如Silverlight是WPF的一个子集，所以你在Silverlight下写的代码能被WPF支持。

In addition, an effective method is proposed to select the β-reducts. First, we calculate a precision parameter value to obtain the subsets of information system that are based on the least upper bound of the data misclassification error. Next, we measure the quality of classification and remove redundant attributes from each subset.

本论文也提出一个根据精确参数来选择最简化集合的方法，这方法首先利用资料错误率的最小上界来决定精确参数值，并利用所获得的精确参数值来寻找资讯系统的子集合；接著计算每一个子集合的分类品质并利用分类品质的量测移除子集合中多余的属性，而删除多余属性的子集合即β的最简化属性集合。

A subset D of R is called to have property L, if there is a Lebesgue number for every family of open interval covering D.

该定理的证明通常都是利用闭区间的这样一个性质：覆盖闭区间的任一开区间族具有有限子族扭盖该闭区间参见

If N is a nonempty subset of a left R module M, then N is a submodule of M if and only if the following conditions hold:(1) x+y is in N for any element x,y in N;(2) rx is in N for any r in the ring R, and any x in N.

假设 N 是左模的非空子集合，那么N 是子模的充分必要条件是，对N 中的任何两个元素x，y有

A subset of patients with asthma is known to have progressive loss of lung function despite treatment with corticosteroids.

一些哮喘患者即使在使用激素治疗后仍会出现进行性的肺功能下降。

But everything in the lucid dream is still a subset of your own mind.

但清醒的梦中的一切仍然是你自己意识的一部分。

Instead it will serve mainly to marginalize you - though you may gain a devoted following among a specific subset.

代替这些的将会使你与社会发展相脱离，尽管你会在一个特别的子集中得到一个忠实的部下。

I'm not an actor. I'm a professor of paleontology.

我不是演员，我是古生物学教授

Spider Network Web site that is a very image of the name.

网络蜘蛛即Web Spider，是一个非常形象的名字。