查询词典 set back

This thesis analyses the changes of management environment in new period with the thought of strategy management. And the thesis also designs a set of strategic business performance appraisement index system which is integrated and scientific in terms of financial aspect and non-financial aspect, concerning to the factual situation of CPEB on the basis of appraisement index system frame in industrial enterprises set up by appreciation department, using advanced systematical appraisement and analysis method and successful experience of confrere in the home and abroad, where as it establishes a set of models on scientific appraisement method which is used to calculate the performance situation of CPEB in the past three years with the analysis and instruction to appraisement result.

论文运用企业战略管理的思想分析新时期企业经营环境的变化，运用先进的系统评价与分析方法，借鉴国外同行的成功经验，在国内有关部门制定的工业企业评价指标体系框架的基础上，结合长庆局的实际情况从财务和非财务两个方面设计出一套全面科学的经营战略性评价指标体系，并在此基础上建立一套科学的评价方法模型，并对企业近三年的业绩情况进行试算，对评价结果进行分析和说明。

Based on the viewpoint of set and denseness,this paper discusses some characteristics of the of continuity set and differentiable function set,and the structure of differentiable function sets,and demonstrates that there does not exist a continuous functional sequence {fn} which is convergent to Dirichlet function.

从集合观点和稠密性出发，讨论了连续函数和可导点集的一些特性及可导函数点集的构造，并证明了R上不存在收敛于Dirichlet函数的连续函数列{fn

It is proved that strictly efficient point set of the objective space is connected when objective function is cone convex－like,and that if objective function is cone convex set－valued mapping,then strictly efficient solution set is also connected.

证明了当目标函数为锥类凸的集值映射时，其目标空间里的严有效点集是连通的；若目标函数为锥凸的集值映射时，其严有效解集也是连通的。

Describing the problem of two dimension fuzzy decision existed in the engineering, the concepts of core set and support set are proposed. Using feasible set to constitute corelation between two sets, determinant theorem is presented to judge if the decision can be realized according to the feasible degree.

描述了工程中存在的二维模糊决策问题，提出了决策的核心集和支撑集的概念，用可行集建立了两个集合间的关联，提出以决策的可行度作为决策能否实现的判定定理。

The thesis can be divided into five parts as follows: First, the structural characteristics of finned-pipe evaporator are analyzed. After selecting suitable microelement controller, the heat-transfer and mass-transfer processes are analyzed for every microelement under the conditions of dryness, wetness and frostiness. Based on previous equations, some parameters of frostiness are confirmed and the frost-growing model is set up under frost condition. Some hypotheses are postulated and with the help of the equation of mass-conservation, energy-conservation and momentum-conservation, the evaporation model which fits in the dynamic simulation is built, which set a solid foundation for system simulation. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. Third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet-parameter on evaporator. Fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio-parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping.

本文的主要内容如下：1对翅片管蒸发器结构特点进行分析，选取适当的微元控制体，就干、湿和霜工况下对每个微元分别进行传热传质分析，基于经验关系式确定霜的有关参数，对于霜工况下的霜生长建立模型，经适当假设，运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型，为系统仿真奠定基础； 2对蒸发在大扰动下的开、停机过程，运用动态集中参数模型进行分析和计算，为更好地描述制冷系统运行的全过程奠定基础，同时也为制冷系统实现自动控制提供一定的理论基础； 3对蒸发器正常运行过程，运用动态分布参数和参数间定量耦合的观点来分析和计算，为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性； 4编写翅片管蒸发器动态特性仿真计算程序，可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场，实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。

As an application of the above proof, we obtain at once that there is an open and dense set in the set of Ω-stable systems such that every system in the set satisfies Axiom A and the no-cycle condition (Axiom A and the strong transversality condition, respectively).

作为上述方法的一个运用，马上可以得出在Ω稳定系统的集合中有一开稠集满足公理 A 和无环性条件(对应的，公理 A 和强横截性条件)。

Set cover greedy algorithm is one of the commonly used algorithms for the test set problem. It is an open problem if the approximation ratio 2ln n+1 directly derived from the set cover problem can be improved.

集合覆盖贪心算法是测试集问题的一个常用近似算法，其由集合覆盖问题得到的近似比21nn+1能否改进是一个公开的问题。

The difference update operation returns a set whose elements are members of the original set after removing elements that are members of the other set.

差更新操作返回一个集合，该集合中的成员是去除掉另一集合中元素后的结果集。

According to mapping relationship between information set and discrete point set, every user was entitled to access an information sub-set. Therefore, a correspondent template was activated, and it was used to encapsulate manufacturing information for the users.

根据信息集与离散点集之间的映射关系，从用户的权限区域映射出用户有权限的信息子集，被该子集激活的制造信息模板的实例将最终用于制造信息的共享。

In this paper,a necessary condition that a cut vertex belongs to every γ s set of G is discussed,and a necessary and sufficient condition of existing indepedent set dominating set in G is given.

本文讨论了割点属于G的任一最小集控制集的必要条件，并且给出了G有独立集控制集的充要条件。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"