查询词典 power function

Power series, radius of convergence; function that can be expanded in a power series on an interval.

幂级数；收敛半径；可展开为幂级数的函数。

Based on the model, closed-form expressions for cumulative distribution function of the output signal-to-interference plus noise ratio and symbol error rate of MIMO MRC systems with equal-power and unequal-power CCI are derived respectively.

在此基础上，分别推导出具有相等功率和互不相等功率的共信道干扰下系统输出信干噪比的累积分布函数和误符号率的闭合表达式。

The article analyze the status in quo of the power distribution geographical information system, GIS and the subject of the entity in the meantime, describing the demand analysis, general layout, the module curtate, module of the power distribution geographical information system, GIS main function.

文章同时分析了配电地理信息系统的现状及存在的问题，描述了配电地理信息系统的需求分析、总体设计、模块划分、模块主要功能。

According to the optimal principle of dynamic programming and combined with the requirement of optimal operation constructed the model of reservoir operation which objective function was to pursue the maximal electric power and the decision variable was the generation power flow.

根据动态规划的最优性原理，结合水电站对优化调度的要求，建立以水电站年发电量最大为目标函数，以各时段下泄流量为决策变量的水库优化调度模型。

Its fundamental function is to control the power but not to grant the power.

从字面上看，这和西方范式经济法的价值取向没有区别，实际上，二者各种价值取向的内涵、所追求的层次是不一样的。

This paper introduces the principles of comprehensive substation voltage and reactive power control, and proposes the hardware structure and characteristics of the high performance MVR-Ⅲ series of this type of systems. It is emphasized that the special harmonic analysis and monitoring function of this system plays a very important role on safety of the reactive power compensa- tion equipment.

简要介绍了变电站电压、无功综合控制的原理，介绍了高性能的MVR-Ⅲ型系列装置的硬件结构及其性能、特点，强调了该系列装置特有的谐波分析和监视功能对无动补偿设备的安全有着极为重要的作用。

This system carried on the analytical and concrete design of detailed need according to the objective demand of each big business enterprise, for example the system managing person class has the legal power of the tallest Class, can use the function of the havings of the system;Generally the managing person has to use the legal power generally, can search the basic information, and personal opinion of feedback, send out to serve to request etc..

本系统根据企业的客观需要进行了详细的需求分析和具体的设计，比如系统管理员级具有最高级别的权限，能使用系统的所有的功能；一般管理员具有一般使用权限，可以查询基本的信息，及反馈个人意见、发出服务要求等。

The concrete work and main contribution are as follows:(1) The index indicating transfer capability homogeneousness is defined, and the new terms like homogeneous grid, grid according with economic flow are put forward. These new concepts describe the degree in which transfer capability is utilized, and they provide the standard for ideal grid whose transfer capability and power generation dispatching economy are in phase. So, new idea is introduced in transfer capability analysis.(2) The multi-objective function with generation cost and transfer capability homogeneousness weighted is constructed. The relationship between system existing generation dispatching and transfer capability is revealed through comparative analysis between security economic dispatch and security homogeneous dispatch, and the variation rule analysis between generation cost and transfer capability homogeneousness with the change of weighting coefficient.(3) Example analyses demonstrate that the difference between specific power system with ideal instance can be identified effectively using the above concepts and method.

具体工作和贡献主要体现在：(1)定义了衡量电网输电能力均匀性分布的指标，提出均匀电网、符合经济流电网的新概念，以描述电网输电能力被利用的程度，并给出输电能力和发电调度经济性相协调的理想电网标准，在输电能力分析评判领域引入了新观点；(2)构造了发电费用与输电均匀性加权的多目标函数，通过对安全经济调度与安全均匀调度的对比分析，以及权系数变化过程中发电费用与输电均匀性的变化规律分析，揭示了系统现存发电调度与输电能力之间的依赖关系；(3)大量分析表明，利用上述概念和方法可有效识别系统在特定模式下与符合经济流电网的偏差程度。

The company provides the precision electronic switch type: leaf switch,rest switch,tact switch,multi-functional switch,swing switch,slide swtich,micro switch,encoder,push key switch,toggle switch,push switch and Matched with various types of switches each series switch keycap,all type jack:2.5/3.5 phone jack,6.35 jack,DC power jack,usb/hdmi jack,AC power jack,S terminal and so on, the company provides the precision electronic connector type: FFC / FPC flat cable connector, BTOB connector, all kinds of memory card connector: Micro SD, SD, MMC, XD, MS, SM, CF card and a single all-in-one deck, etc., switches Products: Tact Switch, multi-function switch, DIP switch, key switch, button switch series, etc.

公司提供各类高品质电子开关：叶片开关、复位开关、轻触开关、多功能开关、摇头开关、拨动开关、微动开关、编码器、按键开关、按钮开关及与各类开关相配套的开关键帽；插座：2.5/3.5耳机、6.35插座、DC电源插座、USB/HDMI插座、AC电源插座、S端子等；精密电子连接器：FFC/FPC扁平电缆连接器、板对板连接器；记忆卡座：MicroSD、SD、MMC、XD、MS、SM、CF单卡及多合一卡座等。

Thesignals of neutron, temperature, flow and pressure are recorded by multichannelanalog magnetic recorder and are analysed by the dynamical signal analyser ofSD375 type, to obtain auto-power spectrum density, cross-power spectrumdensity, phase shift, coherence and transfer function.

文章叙述了改建的重水研究反应堆(HWRR-3)和高温高压回路的噪声分析。利用多路模拟磁带仪记录中子、温度、流量和压力的信号。这些信号利用SD 375型动态信号分析仪进行分析，求得自动功率谱密度、互功率谱密度、相位、相干和传递函数等。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。