查询词典 power

Due to the complexity of the cell jitter, the NonSynchronous Tining Recovery methods are currently not mature With the emphasis being given to the Class A CBR traffic, this paper analyzes the performance of the queueing delay and cell jitter at the source node and intermediate nodes, and discusses the Source Timing Recovery at the destination node in ATM networks Firstly, this paper presents a description of the cell jitter of CBR traffic, and gives the definitions of two kinds of cell jitter regarding the Source Timing Recovery for CBR traffic Then, by using exact mathematical models and analysis methods, this paper analyzes the impact of the factors, such as the capacity of the queueing buffer, the randomness, the deterministic nature and the correlation in cell arrivals of the background traffic sources, on the queueing delay and cell jitter performance of the CBR traffic through Statistical Multiplexitng To obtain an insight into the power spectral distribution and look for better schemes for the depression and filtering of the cell jitter, within the analyses we succeed deriving the power spectrum of the cell jitter for CBR traffic Hence, not only the power spectral distribution of the cell jitter can in the frequency domain be qualitatively understood, but also can the rms (root-meansquare) value of the cell jitter be quantitatively obtained so as to more accurately measure the amplitude of the jitter In the end-to-end performance analysis of the queueing delay and cell jitter, we propose a kind of quasi-periodic cell stream model to characterize the jittered CBR traffic, and present an initial queueing analysis of the CBR traffic following such a model at a generic intermediate node Additionally, we briefly discuss the buildout/playout and Source Timing Recovery functions of the destination node Finally, regarding the Source Timing Recovery of CBR traffic, this paper systematically discusses several important principles of the cell jitter filtering and depression reported in the literature, introduces several implementation schemes of the Source Timing Recovery e.

由于信元抖动的复杂性，非同步定时恢复方法目前还很不成熟。本文针对A类CBR业务流在ATM网络源节点和中间节点的排队时延和信元抖动性能，以及在目的节点的源定时恢复问题作了较为全面的研究。首先，文中描述了CBR业务流的信元抖动，并具体地给出了两种与CBR业务源定时恢复有关的信元抖动的定义。然后，采用了精确的数学模型和分析方法，有针对性地分析了业务背景中信元到达的纯随机性、确定性和相关性以及排队缓存器容量等因素对CBR业务流经过统计复用后的排队时延和信元抖动性能的影响。为了了解信元抖动的功率频谱分布和寻求更好的抑制和滤除抖动的方法，在性能分析中，我们成功地完成了CBR业务流信元抖动的功率谱分析，使得不但可以从频域定性地认识信元抖动的能量分布特性，而且还可以定量地求出信元抖动的均方根值(rms：root-mean-square)，以更为准确地衡量抖动的大小。在CBR业务流的多节点端-端排队时延和信元抖动性能分析中，我们提出了一种准周期性(quasi-periodic)信元流模型来描述感染了信元抖动的CBR业务流，并基于这一模型进行了CBR业务流中间节点的初步排队分析。

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。

In order to give the gyroscope test terrace power supply, it demand designing the appropriation of the gyroscope of the different category triphase power supply to give the power supply to the different category gyroscope.

为了给陀螺测试平台供电，需要设计不同种类的陀螺的专用三相电源，以便给不同种类的陀螺供电。

In this paper, based on BPA, a software of power system analysis, through the calculations of power flow and transient stability for Zhejiang power system under some typical underexcited operating conditions, the results are revealed that underexcited operation reduces the margin of transient stability of the system.

本文基于BPA系统分析软件对浙江电网若干典型进相运行方式进行潮流分析和暂态稳定计算，结果表明发电机进相运行使系统暂态稳定性下降，但在系统内选择适当的大型发电厂在一定范围内作进相运行，对缓解系统低谷负荷时电压偏高问题是可行而有效的。

Uninterruptible Power Supply is a power electronic device which provides high quality and uninterruptible electronic power.

不间断电源是一种能提供优质电源并保证电源供应连续的电力电子装置。

If something interrupts your concentration while you're manifesting a power, you must make a Concentration check or lose the power points, with the power unmanifested.

在你展现异能的过程中，如果有外力打断了你的专注，那么你就必须进行一次&专注&检定，检定失败则整个展现过程失败，而且你用于展现该道异能的灵能点数也会随之消耗掉。

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, we put the mathematical model for warless transmitting consumption forward by analyzing nod\'s inner structure, communicational way and coverage on account of impulsions on nod\'s consumption.we discuss and compare some typical Middle Access Control algorithms and protocols in sensor networks, analyze the present problems about power-saving algorithms, protocols and problem been not still dealt, which is all based on considering and analyzing key techniques in energy-saving, such as power-saving in single sensor, data fusion and power-saving algorithms in crossing layers.

在对传感器网络关键节能技术，诸如单节点节能技术、数据融合技术以及垮层节能算法总结的基础上，着重讨论和比较了传感器网络中几类经典的媒体访问控制算法、协议；分析了目前无线传感器网络节能算法、协议和策略亟待解决的问题。

In recent years, the company has completed 125 MW power plant in Sichuan Minjiang River unit, 125 MW unit of Pingdingshan in Henan, Shaanxi water-power plants of 300 MW Unit, Chengdu, Sichuan Wayao three 55 MW power plant unit of the overall task of construction and the construction of the Sichuan, Chongqing, Guizhou, Henan, Guangxi, Guangdong, Fujian, Hunan, and so a large number of 1,200 square meters to 10,000 square meters of hyperbolic cooling towers, 60 ~ 240 M Xin, such as its smoke 50 cigarettes or tower construction, construction output in 2003 from the 21000000-2004 years 55 million, from 2005 the 110000000-2006年230 million for four consecutive years of double the rate of increase has created one after another miracle!

近年来，公司先后完成四川岷江电厂125MW机组、河南平顶山125MW机组、陕西清水川电厂300MW机组、四川成都三瓦窑电厂55MW机组的整体建筑工程施工任务，并承建了四川、重庆、贵州、河南、广西、广东、福建、湖南等一大批1200㎡～10000㎡的双曲线冷却塔，60～240M烟囟等其计50座烟塔的施工，施工产值从2003年的2100万到2004年的5500万，从2005年的11000万到2006年23000万连续四年翻倍的速度递增，创造了一个又一个的奇迹！

Rectifier is not installed, the generator produces a current directly to the battery followed by the system to consume and to have a greater load on the battery installed will enable the supply of power after the stability of demand for power will follow the natural stability of the vehicle power load will naturally improve.

未装设整流器时，发电机产生的电流直接到达电瓶后，随即被系统给消耗并且对电瓶产生较大负荷，装设后可使供应电源稳定，自然需求电源也会跟随稳定，车辆的用电负荷自然会获得改善。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。