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Previous works showed that both of the cooperation and conflict exist in the reciprocal mutualism, but in what condition the mutualists cooperate or conflict have not been addressed in both of the empirical and theoretical studies.

过去的研究表明在互利合作系统中冲突和合作可能存在于此系统，然而行为主体之间在什么样的情况下合作，什么样的情况下冲突理论上并未解决。

With the aim of exploring the basic condition of subjective well-being and analyzing the mutualization of subjective well-being and its several dimensions, 600 college students majoring in sports in Jiangshu were samply investigated to complete the subjective well-being of college students majoring in sports Survey Questionnaire.

运用自制问卷，对江苏省600名体育专业大学生进行抽样调查，考察了江苏省体育专业大学生的主观幸福感的基本状况，并对主观幸福感与各维度之间的相互关系作了深入分析。

In this paper, the structural types, performance characteristics and the situations of research and application of commonly used superplasticizers at home and abroad were introduced in detail. The development condition and the problems in practice of Naphthalene series supeiplasticizer were also analysed.

本文详细介绍了常用高效减水剂的结构类型、性能特点及在国内外的研究应用现状；分析了萘系高效减水剂的发展状况及应用中存在的问题。

VEGF seldom mediates angiogenesis in normal physiological condition, but it play an inerrant role in the pathological neogenesis of tumor vessel, which has expression of different extent in many tumors.

在正常人生理情况下VEGF介导血管新生不常见，在病理性肿瘤血管新生中起着重要的作用，在多种肿瘤中存在不同程度表达。

The breakthrough point of this thesis is to make use of newsvendor"s model to explain the behavior of double marginalization in the Specialization system with Specialization Advantage, which is not accordant with the statement of" double marginalization " in economics (see Tirole,"the theory of industrial organization, P222-230). On the condition of Specialization Advantage, double marginalization may play positive role in the economy of the system.

论文的切入点是，利用报童模型来说明在具有分工优势的专业分工系统中双重边际效应的表现，这与经济学中对"双重边际效应"的表述参见Tirole(泰勒尔，《产业组织理论》，p222-230不完全一致，在有分工优势的条件下，双重边际效应可能对系统的经济性有积极的作用。

While the day the mice in non-pregnant group sacrificed,the mice in pregnant group were put in a cage to cohabit with male mice.The pregnant group were executed after conception 6 days to observe nidation condition of pregnant mice,and the uterus were taken to make paraffin sections,HE staining,and the sectiond were observed under ...更多 light microscope and image was analyzed.

在非受孕组雌鼠处死取材的当天，受孕组雌鼠与雄鼠合笼，于受孕后6 d处死受孕组小鼠，观察孕鼠着床情况，取子宫做成石蜡切片，HE染色，光镜观察并进行图像分析。

In addition, it was found that the influence of oxygen concentration in the furnace on nitrogen oxide formation cannot be neglected to some extent in the same combustion condition.

研究结果显示，在燃烧条件相同的情况下，炉内氧浓度对氮氧化物生成有一定影响；燃烧温度对氮氧化物生成的影响更为显著。

Firstly, we give a necessary and sufficient condition for a nonnegative square matrix to be decomposed into a product of a finite number of irreducible nonnegative matrices in chapter 1. We prove it by using Frobenius normal form in combinational matrix theory and associated directed graph in graph theory. In addition, we can limit the number of factors to three, and construct every factor.

首先，在第一章中，我们给出了一个非负矩阵可以分解成有限多个不可约非负阵的乘积的充要条件，证明过程利用了组合矩阵论中的Frobenius标准型和图论中的伴随有向图，并且将乘积中的因子个数限制到三个，具体地构造出了分解式中的每个不可约非负阵。

For having a comprehensive acquaintance to this concept, we firstly make a detailed statement for the progress and condition at present of kinds of nonsquareness and nonsquare constant in the sense of James and schaffer in normed space, especially in Orlicz space, and show the background and significance of the content of each part in this paper.

为了对点态非方常数有全面、综合的认识，本文首先，对各种非方性，以及在James意义下和Schaffer意义下非方常数在赋范空间，特别是在Orlicz空间的发展进程及现状做了详细叙述，并给出了本文各部分所讨论的内容、背景和意义。

The Changyeh forest park is situated at middle the Gansu Corridor oasis plain, is in the unique environment, northern side has prospect Long Shoushan to work as the household, encircles in the northern countryside rural cottage link, south side prospect Qilian is boundless, the scenery sand dune is continuous, but south side the Jiulong Jiang narrow-leaved oleaster forest is green and luxuriant, in the garden the sand beach, the sunlight, the forest, the lake water and so on abut the urban district, from, the environment is graceful all day long, the ideal condition profound, is the ideal botanical garden good.

张掖森林公园地处河西走廊绿洲平原中部，处于独特的自然地理环境，北面有远景龙首山当户，在北部田园村舍环围，南面远景祁连茫茫，中景沙丘连绵，而南面九龙江沙枣林郁郁葱葱，园内沙滩、阳光、森林、湖水等紧靠市区，自成天地、环境优雅、意境深邃、是理想的园林佳地。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。