查询词典 a set of

In particular, the system generates bifurcation when 2c-a=0, and then the stable knot bifurcates a hyperbolic saddle point and stable convergence, which is so-called Pitchfork bifurcation. From 2c-a≤0 to 2c-a≥0, the attracting set A of the system is changed from single point to the union set of two different old orbits.

系统在2c-a=0时产生分岔，其稳定的结点分岔出一双曲鞍点和两个稳定的汇，这就是Pitchfork分岔，可见在2c-a≤0变化到2c-a≥0时，吸引集A从单点集变成为连接P和P的两异宿轨道的并。

The set of representable values of type T , or numeric set of T , is a set of numeric values whose elements are the representation of some subset of N .

类型 T 可表示的值的集合，或者说 T 的数字集合，是指一个数字值的集合，其中的元素是 N 的某个子集的表示法。

The PID parameter tuning of non-linear control system is set as the engineering background. The aim is the optimal design of PID parameter. On the basis of the design and research of the advanced PID parameter tuning, the mathematical model-transfer functionis developed through correlation analysis on statistical method.And with the optimization algorithm under constraint condition, the non-linear, Isqnonlin is set as object function. Then with connection of the non-linear constrain optimization algorithm and simulink technique, a set of adjust parameters which fit the performance index of the control system are found. And optimization design process and steps are provided.

本文以非线性控制系统PID参数整定为工程背景，以PID参数的优化设计为目标，在分析和研究国内外PID参数先进整定方法的基础上，运用相关分析实验统计方法建立对象的数学模型——传递函数，把PID参数设计问题转化为一种非线性优化设计问题，借助于约束条件下的优化算法，以非线性最小平方指标为目标函数，将非线性约束优化算法同Simulink仿真技术相结合，找出符合控制系统品质指标的一组调节参数。

It introduces a kind of novel loading test system, based on the operation principle of damper. this loading system is operated by the driving motor. it realizes the loading, in that the damper has a negative drive force that puts on the motor. Based on the ordinary electromagnetic damper, the thesis presents a novel hybrid excitation electromagnetic damper which has adjustable work characteristic, analyses the working principle and structural feature of the electromagnetic damper, deduces the formulas to calculate the eddy current density through the Electromagnetic theory, analyses the distribution of the eddy current in the cotyloid rotor, and also studies the method of calculating the damp torque, establishes the mathematical model of the electromagnetic damper, analyses the relationship between the electromagnetic damper structural parameter and damp torque, researches the engineering design and analysis method of the electromagnetic damper, provides theory foundation for the design and analysis of the electromagnetic damper, contrives a hybrid excitation electromagnetic damper that satisfies the target request, designs a set of compound excitation electromagnetic damping loading control system whose control core is AT89C51 monolithic integrated circuit, analyses the electric circuit part, and carries on the experimental test to this set of electric circuits. Finally it debugs this electromagnetic damping loading system, this system satisfies the target request proposed.

论文提出了一个全新的加载测试系统种类，该加载系统是在阻尼器工作原理基础上，利用电动机拖动阻尼器运转，从而阻尼器产生一个与运动方向相反的阻尼力矩，该力矩作用在电动机上实现对电动机加载测试；同时，论文在一般电磁阻尼器基础上提出了一种新型的可调式复合励磁电磁阻尼器结构，该种阻尼器的工作特性在一定范围内可进行调节；论文分析了电磁阻尼器的工作原理和结构特点，运用电磁场理论分析推导了电磁阻尼器的涡电流密度公式，分析了涡电流在转子杯内的分布图，并对阻尼力矩计算方法进行了研究，建立了电磁阻尼器的数学模型，分析了电磁阻尼器结构参数和阻尼力矩之间的关系，对电磁阻尼器的设计和分析方法进行了研究，为电磁阻尼器的工程设计建立了理论基础；设计了满足技术指标要求的复合励磁电磁阻尼器和一套以AT89C51单片机为控制核心的复合励磁电磁阻尼加载控制系统，对该控制系统硬件电路各部分进行了分析和设计，对软件进行了设计，并对控制电路进行了试验调试，该系统满足所提出的加载指标要求。

Moreover, A hybrid algorithm, ALHybrid, which is made of the algorithm LIDBSO and the algorithm AprioriIpv, is designed. Two algorithm, MQC_Apriori and MQC_LIDBSO, are given to mining multiple level quantitative association rules with item constrains. Two algorithm, PMARⅡ and PMARⅢ, which are based on different sequential mining algorithms, are given for parallelling mining association rules. In order to solve the mining association rules problem when we add a set of data to a database or delete a set of data from a database, two incremental updating algorithm, EUAR and EUAR, are given. Three incremental updating algorithm for association rules mining, DIUAⅠ, DIUAⅡ and DIUAⅢ, are dedigned to solve the three kinds of association rules incremental updating problem in distributed databases.

另外，文中还设计了一个算法LIDBSO与算法AprioriIpv相结合的混合采掘算法ALHybrid；对于多层次、带约束、多值属性关联规则的采掘问题，给出了两个采掘算法：算法MQC_Apriori和算法MQC_LIDBSO；在关联规则的并行采掘方面，还设计了两个基于不同顺序关联规则采掘算法的并行算法：算法PMARⅡ和算法PMARⅢ；在关联规则的增量式更新问题上，还给出了两个改进算法：算法EUAR和算法EUARˉ，分别用于解决当数据库增加或删除一个数据集合时的关联规则增量式更新问题；针对分布式数据库中的关联规则增量式更新的三类问题，提出了三个增量式更新算法：算法DIUA Ⅰ、算法DIUAⅡ和算法DIUAⅢ。

A relation can be tought of as a set of tuples in the relational model, and of course a set never contains two identical query language is able to distinguish rows only in terms of their column values (RULE 2), this is another way of saying that there must be a way of distinguishing any single row from all others in terms of there values, so that a query language statement can retrieve it uniquely.

就可以了教育工作作为一套元组在关系模型、当然，从来一套包含两个相同查询语言能分辨整齐仅在其价值观栏(规则2)，这是另一种说法，必须有一个单一的鉴别方法等各行在价值观上，形成了独特的查询语言陈述可以取回它。

The various scenarios include: Hulk holding a 1210 deck, 1210 deck, Iron Man on a set of 1210's, Spiderman swinging from the needle of a 1200, Captain America battling Captain Britain on 1210's, Black Panther commanding on the decks, Wolverine maneuvering tricks on a set of gold 1210's, Silver Surfer using a 1210 as a surfboard, and Ghost Rider blazing on the decks.

这些T恤结合各种传奇人物和科技产品，主要场景包括有：绿巨人拿著1210甲板， 1210甲板，钢铁奇侠戴著一套1210，蜘蛛人从1210上摆动飞过，美国船长在1210上对抗英国船长，黑豹在甲板上指挥，狼獾机动在一套金黄1210上做手脚，银色冲浪用1210作为冲浪板，还有幽灵骑士玩甲板。

The deep blue sea complete the provision of housing is a product-oriented, the customer gets is not a set of drawings and a pile of building materials and equipment, but a product of industrialization, and she has a house features, but his production process, technical standards and perfect degree of can be regarded as a car, a set of furniture, a computer.

海蓝蓝成套房屋的提供是产品化的，客户得到的不是一套图纸和一堆建材和设备，而是一个工业化的产品，她具有房屋的功能，但他的生产过程、技术标准和完美程度，可以视为一部汽车、一套家具、一台电脑。

In this set system, the set element named quorum is a set of points, and every two quorums intersect.

在这种集合系统中；所有集合元素都是节点的集合，任何两个quorum都有交集。

A heterogeneous network handover method of the present invention includes generating, at a mobile node, self-location information, transmitting the self-location information to a management server which manages heterogeneous networks, searching, at the management server, surrounding networks using the self-location information, composing a set of candidate networks including at least one of the surrounding networks, transmitting information on the set of candidate networks to mobile node and deciding, at the mobile node, a target handover network among the candidate networks.

本发明的异构网络切换方法包括：在移动节点产生自身位置信息，将自身位置信息发送到管理异构网络的管理服务器，在管理服务器使用自身位置信息搜索周围网络，组成包括周围网络中的至少一个的一组候选网络，将关于该组候选网络的信息发送到移动节点，以及在移动节点从候选网络中决定目标切换网络。

Graf, without question, is the greatest women's player in history.

格拉芙，现在，毫无疑问是女子网坛历史上最伟大的选手。

If not, you will have to look around at all your important data.

如果没有，您将需要检查所有的重要数据。