查询词典 power-free

The dissertation is concentrating on the topic of a high power, tunable, millimeter wave free electron laser. The tunable ability of the mm wave FEL is studied. FEL powers are improved by novel variable parameter wigglers. A high brightness electron beam is achieved for FEL. These technologies are very important for realization of high power compact free electron lasers.

本博士论文围绕高功率可调谐毫米波自由电子激光器的研究主题，研究毫米波自由电子激光的调谐特性，用新型磁场逐渐增强的摇摆器等手段提高自由电子激光的效率，研究体积小的高亮度电子束源用于自由电子激光，为研制新一代小型化高功率自由电子激光器提供关键技术。

The second chapter discusses the deep-layer reason of the formation of the belief from the two layers-classical thought and the general knowledge, thought and belief, analyzes deeply the factors of promoting the formation of the belief. We think the decisive power for the formation of the belief was still man" s longing for everlasting life, happiness and freedom. The human-centered reason provoked directly man" s wishes of magnifying life power and seeking the freedom of spirits; The turbulent social environment stimulated man s thirst for life and happiness; The free atmosphere of thought made it possible for the people to develop fully their imagination and to show fully the power of human nature; The thought of Taoist School and Yin-Yang Wu Xing provided the theory basis for the formation of immortal belief.

本文第二章从精英思想和一般知识、思想与信仰两个层面上探讨神仙观念形成的深层动因，对促进神仙观念形成的各种因素进行深入分析后，认为，对神仙观念形成起决定作用的仍是人们对生命永恒与快乐自由的追求，"人本理性"直接刺激了人们张大个体生命力量、追求精神自由的深层愿望；动荡、混乱、战争频仍的社会环境激发了人们对生存与快乐的渴望；自由的思想氛围使人们可以充分发挥他们的想象，充分彰显人性的力量；道家、阴阳五行思想为神仙信仰的形成提供了理论依据。

Is a high-tech enterprise in Henan Province, China Heat Treatment Association, relying on university scientific research strength, the basis of modern power electronics theory, with Zhengzhou University Motorcycle Factory United attachment to the strict requirements of the production process of "X" series new frequency, high frequency, ultrahigh frequency induction heating equipment, the main circuit using IGBT, MOSFET and other new types of power devices, to integrated, modular, as the basic characteristic of independent innovation with new output transformer, equipment greatly enhance the power, energy consumption significantly reduced, the reliability of the maintenance-free development, and by domestic users widely welcomed and has been exported to Southeast Asia and the European Union and many other countries and regions.

郑州科创电子有限公司是河南省高新技术企业、中国热处理协会会员，依托高校科研实力，依据现代电力电子理论，与郑州大学摩托车附件厂联合，以严格的工艺要求生产的"X"系列新型中频、高频、超高频感应加热设备，主电路采用IGBT、MOSFET等新型功率器件，以集成化、模块化为基本特征，配以自主创新的新型输出变压器，设备功率大幅度提升，能耗大幅度降低，可靠性向免维护发展，受到国内用户的广泛欢迎，并已出口到东南亚及欧盟等众多国家和地区。

Based on the extended Phillips-Heffron model for the multi-machine power system and model control theory, a new model control analysis method of free eigensolution is proposed to select the rational position to configurate power system stabilizer in multi-machine power system.

引言 电力系统中的低频振荡是由于缺乏机械模式阻尼而引起的，为了抑制这种振荡，提高电力系统的阻尼及其稳定性，在电力系统中设置电力系统稳定器(Power system Stabi一izer，Pss)是一种经济而有效的方法〔'，2。

Companies in the United States, Germany, Singapore, Hong Kong, Taiwan, Canada has a good partner, agent: Germany Dehn Series Lightning Products Company (Gold-level agents), a world-class quality of its products; the United States figure GE Power Company Series UPS; The United States patent system and maintenance-free ground fire clay welding technology; Norway POWEC series intelligent switch rectifier; the company's goal is to become of these companies and integrated lightning protection of power electronic products, systems integrators to cost-effective integration in the system, to undertake General lightning protection of power electronics and systems engineering.

公司在美国、德国、新加坡、香港、台湾、加拿大均有良好的合作伙伴，代理：德国DEHN公司系列防雷产品，其产品质量世界一流；美国GE数字电源公司系列UPS；美国专利免维护接地系统及火泥熔接工艺技术；挪威POWEC系列智能化开关整流器；公司的目标是成为这些公司电力电子和综合防雷产品的系统集成商，以高性价比集成于系统，承接电力电子和综合防雷系统工程。

The application that passes the power distribution geographical information system, GIS can be right, overall, various resource information of the in due course acquisition electric power business, and take in to refine, analysis, tender gist of relief the decision - making for the handler and decision maker of the electric power business, guarantee the electric power network safety thus and operate efficiently, and for more the multiuser tender a perfect thoughtful service of a fortiori.

通过配电地理信息系统的应用能够正确、全面、及时地获取电力企业的各种资源信息，并加以提炼、分析，为电力企业的管理者和决策者提供辅助决策的依据，从而保障电力网络安全、高效地运作，以及为更多用户提供更加完善周到的服务。

This dissertation gives a special research in microcomputer relay protection for power transformer of 110kV or below voltage ratings, which based on widely summarizing the theory of power system relay protection and its advanced trend. After analyzing the working character of the transformer in details and absorbing the advantages in other power transformer protection, a scheme which is fit to power transformer of 110kV or below voltage ratings is put forward.

本文在全面介绍和评述电力系统微机保护原理及其发展趋势的基础上，对电力系统中大量应用的110kV及以下各电压等级的变压器保护进行了专门研究，根据这一类电力变压器的运行特点，吸取以往各种保护方法的长处，提出了这类电力变压器保护方案。

By building the low frequency model of the system, in the rectifying mode and regenerating mode, the dynamic adjusting procedure of realization for unity power factor, absorbing or regenerating capacitive reactive power, inductive reactive power from or to power grid are investigated.

通过建立系统低频数学模型，分别在顺变和逆变状态下，探讨系统实现单位功率因数、从电网吸收或回馈容性、感性无功功率的动态调节过程。

SP Series Static Phase Advancers qre on-site reactive power comprnsating devices that our company has developed fo large power three-phase winding asynchronous motors.A phase advancer is wired in the circuit of motor rotor to increase power factor of the motor,decrease stator current, lower the olss of lowvoltage motor and power transmission lines,so as to achieve the goal of energysaving.

南通新业电子 HPX静止式进相器 HPX static phase advancer 概述 General Description HPX静止式进相器是本公司专为大功率三相绕线式异步电动机研制的就地无功率补偿装置，它串接于电机的转子回路，用以提高电机的功率因数，减小定子电流，降低电机和输电线路的损耗，从而达到节能降耗目的。

Based on mechanism and vehicle theories theoretical analysis is pursued and normal driving conditions are put forward. The relations are analyzed between load distribution and power consumption. Mechanical formula is proposed. Furthermore in this paper the theoretical model of the total power consumption is established, and the relations of the total minimized power consumption with the air-cushion pressure and the fan revolution are discussed. The optimum operation point is put forward. The dynamic digital simulation studies are carried out on the operating procedure of the half-track air-cushion vehicle on soft terrain. Mechanical parameters and soil mechanics characteristics affecting vehicle power consumption and riding performance are analyzed. At the same time according to the model formula, the automation control problem is discussed. It is a theoretical instruction for further automation control.

本文还从力学和车辆原理的角度进行了理论分析，推导了半履带式气垫车的需求功率及正常行驶条件，研究了气垫压力和功率消耗之间的关系，提出了力学模型公式；建立了半履带式气垫车总功率消耗的理论模型，研究了最小功率消耗时功率与垫压及表征气垫车行驶状态的各参数的关系，分析了相应的影响因素，并提出了最佳工作状态的定义；同时进行了半履带式气垫车在软地面的行驶过程的动态数字仿真试验研究工作，对影响车辆功率消耗和行驶平顺性的各力学参数和土壤参数进行了分析，得到了各运行状态参数的变化规律，验证了最佳工作状态和最佳垫压的理论，根据力学模型公式对进一步的自动控制问题进行了探讨，为系统的控制提供了理论指导。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。