查询词典 data transmission

The analysis of the optical signal transmission characteristics and the physical parameters provides the theoretical foundation for optimizing the design and improving the performance of AWG; and the optimizing design numerical value calculation method solves the complex problem of the optimizing design of the AWG, it can also provide a way for AWG computer aided design system; the AWG optical signal processing analysis provide a way for optical signal Fourier transform, serial and parallel transmission, circle shift, matrix transform and differential processing; the optical signal processing characteristics of AWG develop AWG to use for new field, and the optical signal processing will play an important role on all-optical networks in the future; by the definition of the wavelength transform matrix of the AWG, the signal output positions that come from these input signals of the different wavelength or the same wavelength but the different input ports and carrying different signals can be accurately determined, and the wavelength transmission matrix plays an important role for analyzing the routing of the complex optical network, or designing the network nodes such as the optical path add/drop multiplexer and optical cross connect device; the wavelength transmission matrix also provides a method for monitoring and managing the wavelength transmission of the optical network nodes; e analysis of the AWG' OXC node structure and wavelength routing provides a way for realizing the OXC, especially for multi-path/multi-wavelength OXC and the intelligence node of the optical networks; by the studying of the control plain characteristics, router, traffic engineering, program and the improved arithmetic of the wavelength routing, the method for realizing the GMPLS' OXC optical transport network is provided, and it play an important role for the study of the automatic switched optical network; the time-frequency analysis can provide more information about the dispersion and energy changes of .the pulsed light transmission in the singlemode fiber, it also provides more useful parameters for analyzing the dispersive accumulating and dispersive compensating.

AWG光信号传输特性与相关参数的分析，为进一步优化设计AWG及提高其性能提供了理论依据，而优化设计计算数值方法解决了AWG优化设计计算的复杂问题，为进一步建立AWG的计算机设计系统提供了基础；AWG光信号处理的特性分析，提出了AWG应用的新领域，为光信号的傅立叶变换、串并传输、循环移位、矩阵变换、微分处理等提供了一条途径；波长传输矩阵变换关系的建立，不仅得到了确定多路AWG每路信号从输入端口到输出端口的准确输出位置的方法，而且在分析应用AWG实现复杂的光通信网络路由的连接、特别在设计分插复用器和交叉连接器等网络节点时有重要的作用，能有效而准确地确定波长的路由关系，为实现节点波长传输路由的监控和管理提供有效手段；基于AWG的OXC结构和波长路由的确定为实现OXC技术、特别是多路多波长的OXC和光网络的智能节点技术提供了有效的方法；控制平面的特征、路由器、流量工程、程序及改进的波长路由算法的研究实现了基于GMPLS的OXC光传送网络的控制平面，为建立自动交换光网路提供了一定的基础；时频分析可以更直观和更清晰地描述脉冲信号在单模光纤中传输色散和能量的变化，为色散积累和色散补偿提供有效的分析参数。

Due to the development of computer and the popularization of Internet, more and more enterprises have adopted the computer network for the data communication to achieve the commercial business transaction or factory control. However, the data transmission in network is complicated and unforeknown. Thus, it will get some problems or affect the system operation if data are lost during the data transmission. The TCP/IP protocol is currently one of the most popular communication protocols. And the service quality from user request will be higher and higher. Therefore, How to provide the high–quality data communication and avoid the data loss is the goal of this thesis.

随著电脑技术的进步以及电脑网路的普及，愈来愈多企业体系利用电脑网路来做资讯交换，以达到商业交易或工厂控制的目的，而网路传输状况难以预测，若在资料传输过程中发生资料遗失，小则造成资料不对，大则造成应用系统无法正常运作，现今工商业对网路应用的依赖度愈来愈大，稍有闪失，都有可能招致莫大的损失， TCP/IP协定是目前网际网路上最被广泛使用的通讯协定，而目前使用者对其服务品质的要求也愈来愈严格，因此，如何在现有的网路下避免资料遗失及提高通讯品质，就是本篇论文所要探讨的课题。

Trade mode partrecites the operation model power transmission market and detailedly discusses theprice system of power transmission market; on the basis of electrovalence system ofpower transmission, it calculates and analyses province-stridden power transmissionexpenses combining the actualities of countrywide provincial trade and the actualcircumstances of provincial power transmission of middle-Chinese power grid; itrelates to the mode of big power consumers directly purchasing electricity andfinance instrument of power transmission market.

交易模式部分中叙述了输电市场的运营模式，对输电市场的价格体系做了详实的论述和相应的探讨；在输电电价体系的基础上，结合全国省间交易的现状和华中电网跨省输电的实际，对跨省输电费用进行了相关的测算和分析；涉及了大用户直购电模式和输电市场的金融工具。

A standard expected value model for multi-objective multi-stage transmission planning is presented to realize the transmission optimal planning with the control of line overloading risks. In this model, a constraint of overloading risks is built with expected value and standard deviation of random line active power and two objectives are given as expected value of the average power loss and discount value of the investment cost. By modeling uncertain informations with probability theory, the probabilistic DC power flow is adopted for the correlated calculations among random variables in the planning model.4 A novel multi-objective transmission planning approach that considers transmission investment profit is proposed. Requests for transmission investment profit and social welfare are involved in the proposed planning approach.

以方案总投资费用贴现值和平均网损期望值为目标函数，建立多目标多阶段输电网规划的期望值模型，以线路有功潮流过负荷随机变量的期望值和标准差构建过负荷风险约束，考虑了风险发生概率和严重程度两方面的特征，通过对不确定性信息的概率建模，利用概率直流潮流进行各随机变量的相关计算，实现了控制过负荷风险条件下的输电网优化规划。4提出考虑输电投资收益的多目标输电网规划方法，综合考虑市场参与者对输电投资收益和社会总福利的要求加热管及其对输电网规划的影响。

Then, interruptible load is introduced into transmission congestion management in the paper. The paper discusses the application of interruptible load to transmission congestion management in power pool market. Market risk of evade is very important in transmission congestion management. The FGR, FTR, TO are introduced into transmission congestion management, its concept and implement in bilateral market are discussed in the paper. It provides the valid means of evadable price risk for the market participant. The reasonable allocation of congestion cost is very important in transmission congestion management. The paper proposed a novel methodology for allocation of congestion cost based on the line flow analysis.

然后，将可中断负荷引入到输电阻塞管理中，对其在电力联营体交易市场模式下输电阻塞管理中的应用进行了全面阐述；市场风险的规避是输电阻塞管理中需要考虑的重要内容，本文将基于潮流的输电权、金融型输电权及输电期权引入到输电阻塞管理中，阐述了其基本概念以及在双边交易市场模式下的具体实施，为市场参与者提供了规避价格风险的有效手段；阻塞费用的合理分摊是输电阻塞管理中的重要内容，本文提出了一种基于阻塞线路潮流组成分析的阻塞费用分摊新方法。

Based on the corona model, we divide the maximal transmission range of sensors into several levels. Nodes in the same corona have the same transmission range level termed the transmission range of the corona, and different coronas have different transmission ranges, which compose a list termed transmission range list.

在这种模型里，节点的传输距离被分成了若干等级，同一环内的节点的传输距离是相同的，而不同环的节点的传输距离可以不相同。

This dissertation stems from the project "Study on high efficient multi-flow transmission system" which is sub-project of the Natural Science Foundation Key Project "Fundamental study on energy saving of mechanical/fluid transmission and new transmission methods", which mainly analyzes the energy saving issue of mechanical transmission system from the point of view of design theory and method. Multi-flow transmission systems have been widely applied to large mechanical equipment such as creeper truck, helicopter, cement grinder, hoist, wind electricity generator, construction machinery and metallurgy industry.

本文来源于国家自然科学基金重点项目&机械流体传动的节能及新型传动方式的基础性研究&中的子课题&高效多流传动系统的设计理论和方法的研究&，主要是从设计理论和方法的角度分析机械传动系统的节能问题，多流传动系统已广泛应用于大型机械装备，如履带牵引车、直升机、水泥磨机、起重机、风力发电机及工程机械、冶金等行业之中。

One transmission cell to another while maintaining the DVB-H service.· For a number of reception scenarios; indoor, outdoor, pedestrian and inside amoving vehicle, the transmission system shall offer sufficient flexibility and scalability to allow the reception of DVB-H services at various speeds, whilstoptimizing transmitter coverage.· As services are expected to be delivered in environments that suffer high levels of man-made noise, the transmission system shall offer the means to mitigate their effects on the performance of the receiving terminal.· As DVB-H aims to provide a generic way to serve handheld terminals in various part of the world, the transmission system shall offer the flexibility to be used in various transmission bands and channel bandwidths.

因此DVB-H采用分时方式的资料传送形式，把原本通道频宽是由其它节目共同分配享有的，现在只可以让某一个节目使用全部的频宽所以让节目传送的位元率提高了，相对的减少传送的时间，但跟DVB-T一样在单位时间内所传送的资料是一样多的，由於DVB-H采用分时多工的方式传送资料所以接收器只在该节目传送的时间内接收该笔资料，而其它时间则不接收然后在等一个单位时间内，该节目的资料再传送时在接收，如此开关开关达到收到整部节目的资料，并大量的减少持续接收节目所消耗的功率，接下来由於DVB-H采用4K正交分频多工编码的方式，虽然涵盖的范围没有DVB-T大但对高速移动的时候接收信号时的效果会比较好。

It is found that comparing with compact single circuit transmission mode, T-type compact transmission mode of two circuits on the same tower and conventional transmission mode of two circuits on the same tower, the transmission mode of two circuits with same phase sequence in the same tower window need narrower corridror width, and the radio interference and audible noise caused by this transmisison mode is relatively lower, especially, the corona loss is reduced evidently, thus better economic and social effects can be obtianed by applying this transmission mode in a short distance under a centain condition.

从走廊宽度、电磁环境、潜供电流和防雷特性4个方面对750 kV同塔同窗同相序紧凑型输电方式进行了分析，发现与单回紧凑型、同塔双回T型紧凑型及同塔双回常规型输电方式相比，采用同塔同窗同相序紧凑型输电方式所需的走廊较小，无线电干扰和可听噪声相对较低，尤其是电晕损失明显减小，采用这种方式在一定条件下可获得较好的经济效益与社会效益。

The main contributions of the paper are as follows:(1) The paper expounds the characteristics of power transmission of EHV and UHV six-phase transmission lines. Researching results show that six-phase can utilize the overhead transmission right-of-way efficiently, and improve the density of power transmission. At the same time, the electric field on surface of conductor, the power frequency electric-magnetic field at ground level can be controlled within the range of permission for six-phase transmission lines.

本文对六相输电线路的功率传输特性和几种继电保护原理进行了深入的研究和分析，取得如下成果：(1)详细分析和研究了六相输电线路在超高压和特高压两个电压等级上的功率传输特性，研究结果表明，六相输电线路能够最大程度地利用线路的走廊空间，明显提高系统的功率传输密度，并且线路的表面电场强度，以及线路下方的工频电场和磁场强度完全可以控制在规定允许的范围内。

Although translator has turned from being a crystal ball by which the original culture can unrestrainedly penetrate to another crystal ball by which the target culture can freely traverse, the translator's personal embodiment, in the process of cognitive act, are still absent in translation studies. Translators are still subjects without body or simply disembodied subjects.

译者虽然由原语文化可以自由穿透的玻璃球变成了译语文化可以自由穿越的玻璃球，但译者认知过程中的个体体验在翻译研究中依然缺席，译者依然仅仅是一个没有躯体体验的主体。

Chillingly, he claimed our technology is 'not nearly as sophisticated' as theirs and "had they been hostile", he warned 'we would be been gone by now'.

令人毛骨悚然的，他声称我们的技术是'并不那么复杂，像他们一样，和"如果他们敌意"，他警告说，'我们将现在已经过去了。