查询词典 security system

On the basis of introducing the channel and system model of wireless optical communication,average bit error rate of uncoded and RS coded system with channel side information were analyzed,and compared with Turbo coded system from the following two aspects:received optical power and Log-amplitude fluctuation variance.

在介绍无线光通信信道及系统模型的基础上，推导了无线光通信未编码系统和RS编码系统在已知信道边信息条件下的平均误码率，从接收光功率和对数振幅起伏方差方面对RS码编码系统和Turbo编码系统的性能进行比较。

In the second part, emphasis is put on the multiple capacity of orthogonal coded spread-spectrum multiple access system with coherent and noncoherent demodulations. The multiple access capacities of uncoded system and error -correcting coded system are compared. The capacity improvements which result from the use of diversity techniques are also studied.

第二部针对正交码扩频多址系统中多址容量的问题，分析比较了采用纠错码和不加纠错码时OC-SSMA系统的多址容量，并研究了分集技术的采用对OC-SSMA系统容量的提高，指出在信息速率及码片速率相同的条件下，正交码扩频系统的性能明显优于常规扩频系统。

Firstly, in the view of uncomplete and such significant quality in choosing the splendidplanning scheme, it is required to set up a scientific and effective evaluate index system, logisticscenter planning and consideration need to consider society, economy, environment, logisticsindustry and system and network, and so on, accurate evaluating is based on scientific andrational and effective evaluate index system.

首先，本文针对物流中心规划方案选优的不全面性和其重要性，提出要建立科学有效的评价指标体系。物流中心的规划建设要考虑社会、经济、环境、物流行业、系统、网络等诸多方面，科学合理行之有效的评价指标体系是进行正确评价的基础。

But for those countries which are buildingmodern political system and economic system according to therequirements of democratic politicat and commodity economy,imperfectand uncomplete of the new system itself provide opportunities forcorruption behaviours.

而对于那些正在建立与民主政治和商品经济发展要求相适应的现代政治和经济体制的国家来说，新体制本身的不完善、不配套为腐化分子提供了可乘之机。

This system can also report the alarm to the unconventionally data and print them. We discussed the newest technology actuality of the ships engine room monitoring and alarm system at home and in the world, and developed the use of the SCADA Forcecontrol5.0. In order to meet the requirement of the engine room monitoring and alarm in the ship, we planned and designed the monitoring and alarm system.

通过对国内外最新的机舱监测报警系统的技术现状进行讨论和对北京三维力控公司的监控组态软件Forcecontrol5.0的使用开发进行研究，针对&诺克&号提出的机舱监测报警要求，进行了监测报警系统的规划和设计。

This system can also report the alarm to the unconventionally data and print them. We discussed the newest technology actuality of the ship's engine room monitoring and alarm system at home and in the world, and developed the use of the SCADA Forcecontrol5.0. In order to meet the requirement of the engine room monitoring and alarm in the ship ,we planned and designed the monitoring and alarm system .

通过对国内外最新的机舱监测报警系统的技术现状进行讨论和对北京三维力控公司的监控组态软件Forcecontrol5.0的使用开发进行研究，针对&诺克&号提出的机舱监测报警要求，进行了监测报警系统的规划和设计。

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。

The Third chapter analyses the chaos feature possessed by disequilibrium economy system in detail, reveals universality of economy chaos studies the problem of disequilibrium Economy system's foreost and control analysis economy's strategy management problem using chaos'principle of unexactness in measuring Meanwhile, this chapter introduces the CML model, which reveals of economy, and probes into the space-time chaos character of economy system.

第三章详细分析了非均衡经济系统所具有的混沌特征，揭示了经济混沌的普遍性；研究了非均衡经济系统的预测与控制问题；应用混沌的测不准原则分析了经济的战略管理问题。同时把揭示湍流规律的CML模型引入经济分析，探讨了经济系统的时空混沌特征。

As the reason of the institution, that is because the formal system"s drawback, the formal system"s shortage, and ignoring the unformal system.

从制度根源深究其原因，是由于现有正式制度的缺陷，所需正式制度的缺失，以及忽视非正式制度的影响造成的。

Within the limits of products' utilization continuity demand in the condition of unimproving original parts manufacturing precision and unchanged original assembly method, a standard test system is designed, which established by the principle of the simulation quantity transferability. The system can be used in assembling and checkout. The system is put into effect in the production to meet the requirements of parts' interchangeability.

在飞行准备阶段，地面操作人员可以通过任务计划地面站将任务数据加载到DTC中；在飞行初始化阶段，飞行员将DTC插入座舱中的安装架后，即可将其中的计划数据通过DTU加载到各航空电子子系统中；在飞行中，DTC可以根据DTU发来的指令和数据，按事件记录数据；在飞行后，地面操作人员可以通过任务计划地面站处理DTC在飞行过程中所记录的数据。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。