查询词典 power on

It also introduced selecting methods of the power redirectors in the steering-system design. Moreover it also did the further research on the power redirectors matching and coordination problem of the suspension system and the steering-system, calculated steering wheel strength and momental gradient when the heavy-duty vehicle matched two kind of power redirectors, did entire vehicle performance simulation research on two matching schemes of the suspension system and the steering-system.

还介绍了在转向系统的设计过程中动力转向器的选型方法，另外还针对动力转向器匹配及转向系统与悬架系统匹配问题做了进一步的研究，对重型汽车匹配两种动力转向器时车辆的转向盘力和力矩梯度进行了计算，并对两种转向系统、悬架系统匹配方案进行了整车性能的仿真研究。

Therefore, the analysis combines with evaluation of listed corporation competitive power have important academic and realistic meaning. Seldomly has research been carried on to listed corporation competitive power at present, which, seldom or never, considered the influence of institutional factors on listed corporation competitive power.

当前对上市公司竞争力进行的研究还很少，考虑到制度因素对上市公司竞争力影响的研究更是微乎其微，而国内外学者已经通过大量的理论与实证研究证明公司治理是决定公司竞争力的一个重要因素。

The VSCF DFIG wind power generation is transient response proceeding, which is influenced by operation characteristics of generator before and after grid connected. A novel S-Function is adopted to describe the mathematic model of DFIG based on state equation. A complete simulation model of VSCF DFIG wind power generation system based on MATLAB/Simulink and SimPowerSystems is established, which can be used to not only simulate subsystems of no-load operation and generation operation, as well as can be used to but also accurate control parameters of DFIG in simulation. The simulation model have excellent transportability, and can be used DFIG of different power rated if only design relevant controller.

变速恒频双馈电机风力发电是一个受并网前后发电机运行状况影响的暂态过程，利用MATLAB的S-Function编写DFIG的仿真程序，然后结合Simulink和SimPowerSystems工具箱，开发了基于S-Function的空载运行和发电运行的变速恒频双馈电机风力发电子系统模型，在仿真过程中可对双馈电机进行精确控制，然后对其进行了系统整合，本文开发的模型具有可移植性，只要再设计相应的控制器，就可应用于不同功率等级的双馈电机风力发电系统。

This article focuses on uptimizing the allocation of power resource and solving the problem of unsufficient resource through planing the volum of power use and the limit on power load within a period in the future.

本文着重从规划未来一段时间的用电量、最大负荷等方面来缓解和解决重庆电力资源配置优化问题以及不能自给自足的局面。

In this paper, based on a pill-box window model with a conical-shaped alumina ceramic and Ansoft HFSS software, the relation of VSWR with various electrical parameters in the window is simulated; the effects of variations of the output window structure on electrical field intensity, microwave power flow and quantity of heat are analyzed; the electrical characteristics of frequency bandwidth, power capability and heat dissipation for the pill-box window with conical-shaped or disk alumina ceramic are discussed, which shows that, with a rational structure of the window with conical-shaped alumina ceramic, the output capability of microwave peak and average power may greatly be increased, the secondary electron emission may effectively be suppressed, and heat dissipation may become more uniform and be easier for cooling.

本文在前人工作的基础上，基于圆锥形陶瓷盒形输出窗模型，采用Ansoft HFSS三维计算软件的优化模拟，对该输出窗模型的驻波频率特性与各种结构参量的关系进行了优化模拟，分析了该输出窗片结构变化对其表面的电场分布，功率流分布、热量分布的影响，得出最优模型参数。并且探讨了陶瓷窗片的形状和几何结构对改善输出窗的频带特性、提高峰值功率和平均功率、抑制二次电子倍增方面的作用。

In this paper a new contingency screening and ranking method is formed by combiningiterative filtering screening technology with continuation power flow analysis. Researchingpreventive control policy in reactive power compensation and load control when themargin of stability is serious, and reciprocal math model is given;through the exempleof IEEE39 typical system , the availability of the discussed methods in this dissertationwas approved. Aimed at the real grid, the contingency screening analysis and preventivecontrol policy based on Beijing power grid is discussed;the static voltage stabilityanalysis software based on figure draw of Beijing grid is realized, and the software hasthe junction to BPA .

论文提出了将迭代过滤筛选技术和连续潮流法相结合的事故筛选分析方法；从无功补偿控制和负荷控制两方面研究了系统裕度紧张时的预防控制策略，给出了相应的数学模型；采用IEEE39节点的标准系统算例，验证了本文提出的静态电压稳定事故筛选分析方法的可行性；针对实际电网讨论了基于北京电网的事故筛选分析和预防控制策略；通过与BPA接口实现了基于北京电网图形平台的静态电压稳定分析软件。

Because of this large-scale interconnected power networks which are operating closely at a limited transmission level and all kinds of fast controllers which are called on to improve systems dynamic behavior, such as fast exciters、 HVDC、 FACTS and so on, the modern power system is inherently a nonlinear system, called as a stressed power system.

对于上述重载电力系统，因为传统的线性化分析方法不容易计及系统内部非线性动态结构信息，所以很难揭示其一些非线性奇异现象的实质。所以，目前国内外，用于研究强非线性系统的动态特性的理论依据主要是向量场正则形理论。

Include the following types:(1) check value car, for the railway Vehicles weighing, the actual track is a kind of moving in large weights;(2) Power generation car, the car has a small power station, they can always call on the railway line on the power supply;(3) gauge inspection vehicles, for inspection and verification of railway bridges, tunnels and other large buildings close to the limits in order to determine the safety of vehicles;(4) test cars were equipped with test equipment, used to measure and record rolling stock and railway line performance parameters;( 5) The rescue vehicles, for the train accident occurs, clear the line obstructions and incidents from re-rolling stock;(6) LTL office vehicles for the LTL freight train crew members, escort personnel work and rest;(7) Ballast cars transport and shop for the construction of lines unloading ballast;(8) long rail vehicles for the transport of long rail or recycle that old rail;(9) snow vehicles, clear the rail line, the snow outside.

包括以下几种类型：（1）检衡车，供铁路车辆称重用，实际是一种可在轨道上移动的大砝码；（2）发电车，车内设有小型电站，可随时调用于铁路线路上供电；（3）限界检查车，用于检查和核对铁路桥梁、隧道等大型建筑物的接近限界，以确定车辆通过的安全性；（4）试验车，车上装有试验设备，用于测量和记录机车车辆和铁路线路的性能参数；（5）救援车，用于列车运行发生事故时，清除线路障碍物和起复事故机车车辆；（6）零担办公车，供零担货物列车乘务人员、押运人员工作和休息；（7）石碴车，用于修建线路运送和铺卸石碴；（8）长钢轨车，用于载运长钢轨或回收旧钢轨；（9）除雪车，清除线路钢轨内、外侧积雪。

To improve the stability of Arcjet discharge plasma in low current and high voltage mode, research on the demand of output characteristics of Arcjet Power Conditioning Unit was conducted. In this paper, based on PWM invertors and current mode control, using MOSFET as the main power device, an Arcjet Power Conditioning Unit was developed. Through adding a closed loop feedback circuit of output voltage, it can make the output characteristics of PCU be positive resistance to ensure the stability of Arcjet discharge plasma. The experiment indicates that this PCU can make Arcjet engine work at high voltage mode (100 V, 10 A) and ensure the stability of arcjet discharge plasma. Finally, it provides the experimental data of Arcjet when working.

为了解决小电流、高电压下电弧火箭等离子体的稳定性问题，研究了电弧火箭发动机对电源调理单元的输出特性要求，基于逆变电源脉宽调制技术与峰值电流型控制原理，以MOSFET为主功率器件，研制了一台电弧火箭电源调理单元，给出了Arcjet工作时的实验数据，通过增加PCU输出电压的闭环反馈电路，可以使PCU的输出外特性呈现正阻性，保证电弧的稳定燃烧，实验结果表明，该电源调理单元能使电弧火箭发动机达到高电压工作模式(100V， 10A)，保持电弧工作的稳定性。

Button D is the power and timing key : When plug in the power, the green light on and the machine will be in standby mode, press one time is on and default timing as an hour, and press twice up to two hours, the third time is three hours, followed by cycle, If you want to turn it off,just long press it and last for 2 seconds,the machine is shut down and the returned to the standby mode,if you want to stop here just power take off.

此键为开机和定时键：插上电源按键底有绿色灯光，此时为待机状态，按一次此键为开机，主机默认定时1小时，再第二次定时2小时，按第三次定时3小时，依次循环，长按2秒为关机，整机又返回待机状态。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。