查询词典 fatou lemma

In the second place, we introduce some relativeconceptions of topos and weak topos, including category, topos, middleobject, weak topos, power object and pullback lemma.

第二部分是预备知识，首先介绍了区间数的概念及其运算，在此基础上引入了区间值模糊集的概念、运算以及它与直觉模糊集之间的关系；然后介绍了topos和弱topos的相关概念，包括范畴、topos、中间元、弱topos、幂对象和拉回引理。

Sperner's lemma concerns the decomposition of a simplex into smaller simplices.

斯波纳引理涉及到把一个单纯形分解为较小的单纯形的问题。

Compared with the single pollution, the eco-toxicity of compound pollution of As+Cd and Cu+Cd becomes stronger, which preemie a synergistic effect, as far as the lethal concentration to the cell of duckweed's lemma is concerned; As+Cu and As+Cu+Cd is inclined to an antagonistic effect of which the eco-toxicity of compound pollution becomes weaker.

与单一污染相比，As+Cd和Cu+Cd复合污染对浮萍叶绿素毒性增强，表现为协同作用，加强了对浮萍叶细胞的伤害；而As+Cu和As+Cu+Cd复合污染对叶绿素联合毒性作用趋向于毒性减少的拮抗作用。

On the base of the concept, we give the Schanual Lemma about weak injective modules and discuss the properties of the homomorphisms which can be extended in weak injective modules.

Kerβ的β∈Hom_R，都存在γ∈Hom_R使得β=γα成立，则称T为N-弱内射R-模，且称α为T与M的相伴同态。在此定义的基础上我们给出了弱内射模的Schanuel引理，讨论了弱内射模中能进行开拓的同态的性质。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。