查询词典 variable density system

However, for B2C e-business, current development model does not fit to create flexible and variable system. That is to say, without redeveloping system, it is not simple, convenient or variable for users to change the function and style of the web pages and the structure of the web site.

而对于B2C电子商务系统而言，当前的开发模型并不能很好地实现B2C电子商务系统的灵活可变，即在不对系统进行二次开发的前提下，不能够让用户简单、方便、灵活地改变网页功能和表现形式以及网站的结构。

OMRON full range of automation products in East China area level agent; Mitsubishi Electric system of collective business, Siemens systems integrators, and at the same time Deputy Hitachi variable frequency, variable frequency drive system Panasonic, PROFACE screen, EVIEW screen, IFM, B + F, AUTONICS components, industrial computers and Kunlun EVOC-state configuration software and embedded systems.

OMRON全系列自动化产品华东区的一级代理；三菱电机系统集体商，西门子系统集成商，并同时代理日立变频、松下变频传动系统、PROFACE屏、EVIEW屏、IFM、B+F、AUTONICS元器件、研祥工业计算机和昆仑通态组态软件以及嵌入式系统等。

The variable spraying control system took the S3C44B0X microprocessor of ARM7 series as its core control part and programmed with C language in the UCOS-Ⅱ environment. The system was able to fulfill the data acquisition and processing of the position and the speed about the sprayer, the pressure and the flow about nozzles, and recognize the plot and then adjust the electrical control valve to realize variable spraying.

该系统以ARM7系列的S3C44B0X微处理器为核心，在UCOS-Ⅱ操作系统环境下，使用C语言编程实现机具作业位置、行进速度、喷头入口压力以及喷头喷药量信息的采集与处理、网格识别和电动调节阀控制。

The paper also study the variable control of uncertain system and the variable control of time lag system. At last adopt this discrete approach law in Series-wound Active Power Line Conditioner control.

同时对不确定性离散变结构系统和时间滞后不确定系统进行了分析；最后用离散变结构控制方法对串联型有源电网调节器进行控制。

The system implemented forest fire model selection automatically and intelligently. BP artificial neural network model of forest fire model selection was build by treating forest fire environment data as inputting variable and treating appropriate forest fire model as outputting variable. At the same time, we studied the methods of acquiring and calculating data of inputting and outputting. The system implemented machine of model selection automatically based on dynamic data driven technology. We selected 72 items experimental data from historical forest fire records in Beijing to experiment and confirm the validity of model selection. It turned out that the reliability of model selection is more than 80 percent.

3基于BP人工神经网络方法设计了林火模型适宜性选择技术框架结构，通过神经网络形成林火模型选择知识，实现了林火模型的自动化和智能化选择；以火场环境因子为输入变量，以适宜火场环境模拟的林火蔓延模型作为输出变量，构建了林火模型选择神经网络模型；研究了输入、输出因子数据的获取与计算方式，实现了动态数据驱动的林火模型自动选择机制；以本京市为例，选择了有详细火场情况记录的72场林火作为实验样本，其中60条记录作为学习样本集，12条记录作为验证样本，对神经网络进行了学习和验证，实验结果表明，模型选择精度可达到80%以上。

Presents the design of longitudinal control for ASTOVL lift-fan aircraft, a multi-variable, strong-coupling, complicated nonlinear system to make the system nonlinear offset and decouple, and the method used for linear system in designing the system to gain expectant flying qualities and the combination of aerodynamic control surfaces with thrust vectors to delay the control surfaces getting into saturation, and the minimum N-norm generalized inverse theorem of weighted generalized inverse adopted to apportion the moments commands, which make the control surfaces gain appropriate deflection and the simulation results to verify the dynamic inverse control laws designed really make the system nonlinear offset and decouple; when one command is given, only this output will response, and others do not response; when all commands are given together, the responses will be just the linear superpose of the response of each command, therefore the operation of the pilot will be simplified greatly.

摘 要： ASTOVL升力风扇飞机是多变量、强耦合、复杂的非线性系统，采用非线性动态逆理论设计控制律以实现系统的非线性对消及解耦，然后，采用线性系统的设计方法对系统进行设计，以使系统获得期望的飞行品质。同时，考虑到ASTOVL升力风扇飞机是由气动舵面和推力矢量融合作用的，为了延缓各舵面进入饱和的时间，采用加权广义逆中的极小N-范数广义逆定理分配力矩指令，从而使各舵面达到适当的偏转角。并将所设计的控制律进行了仿真，结果验证了所设计的动态逆控制律使系统实现了非线性对消和解耦，单个指令作用时，只有该项响应，其余不受影响；所有指令作用时，其结果就等于单个指令作用时的线性叠加，这样使驾驶员的操纵大大简化而易于控制，从而大大降低了飞行事故率。

Optimization arithmetic of low osmose oil field network problem is presented that oil-gas gathering system, sewage dispose system, injection system, electricity system are solved in succession, and the systems are connected with variable, layout and parameter optimization are included in every son system.

给出了低渗透油田地面工程网络拓扑优化的多级分解优化算法，即顺次进行油气集输系统、污水处理系统、注水系统和供配电系统的优化，各子系统间又通过变量互相联系，每一个子系统的网络优化又分解为布局优化和参数优化。

Different from traditional system protection models, such as access control matrix model, this theory describes the operations in system by functions of random variable vectors, build an analysis model of trusted system with three axioms, and analyze the information flow in the system by tracing the operation sequence of the system.

与访问控制矩阵模型等传统的保护系统模型不同，这一理论用随机变量向量的函数来描述系统操作，基于三条公设建立了可信系统的分析模型，并通过对系统操作序列的跟踪来分析系统中的信息流。

A control system of variable air volume box was designed through inverse system method. Both inner loop of control system and outer loop of control system were designed through inverse system method.

采用逆系统设计方法对变风量空调箱的控制系统，包括控制系统的内环和外环，进行逆系统设计。

The company has been devoting to product development and renewing. Aiming at metallurgical industry, iron and steel company's coking system and petrol-chemical oil refining system, the company developed new environmental protection equipments by itself, i.e. frequency variable multi-chain driven tar separator and revolving drum sulfur shaping machine. These two products have gained certificates of patent issued by National Patent Bureau and been widely applied in oil refining system and coking system.In 2008 we have manufactured trolley system and facilities for ZHONG GANG Group .

我公司致力于产品开发、更新的研究，并针对冶金行业、钢厂焦化系统、石化炼油系统自主研究开发出新一代环保产品，变频多链式传动焦油分离器、转鼓式硫磺成型机，这两项均获得国家专利局颁发的专利证书，并广泛应用于炼油及焦化系统。2008至2009年我公司还为中钢集团四川碳素股份有限公司制作了台车式焙烧炉工程中全部的台车系统及相关设备。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。