查询词典 three-wire system

The mathematical model and working modes of a novel three-phase two-arm three-level neutral-point-clamped pulse width modulation rectifier suitable for direct-driving wind power system are analyzed in detail, and the constant frequency control strategies based on space voltage vectors are proposed and applied to the rectification conversion of direct-driven power generation system.

系统分析了新型三相两桥臂三电平中性点箝位脉宽调制(pulse width modulation，PWM)整流器的数学模型和工作模式，提出了基于空间电压矢量的恒频控制策略，并将其应用于直驱风力发电系统整流变换中。

The paper analyses the concurrent quotation theory inland and overseas, the actuality of quotation business, the component of mould price, incorporates mould base quotation operation flow and characteristic, compares currently popular quotation theories and methods, and selects appropriate quotation method of mould base. Then the paper analyses enterprise's operation chain and investigates the operation management system of mould base quotation based on Web three-tier structure and key techniques, and finishes the whole system's design and empolders the main modules through combining the technology of network and database and operation management. This paper introduces the current popular B/S three-tier structure and classical technology of MVC design pattern on J2EE platform.

本文首先分析了相关的国内外研究以及当前模具报价的现状，并在研究了模架价格构成及报价理论和方法，同时结合模架报价业务流程和特点的基础上，通过比较当前较流行的几种报价方法，选择了合适的模架报价方法，然后针对中国广大模架生产企业的现状，通过对企业业务链的分析，主要围绕模架生产企业的报价业务管理信息系统和其中的关键技术进行了研究；结合网络、数据库技术和业务管理技术完成了基于Web的模架报价业务管理信息系统总体设计；对其中的主要模块进行了开发，并对当前流行的B/S三层体系结构和基于J2EE开发平台的经典MVC设计模型技术进行了介绍。

As we have abolished planned economic system, we should put its cause system, analysis frame, the theoretical prerequisite and so on into historical museum. we should take more scientific market economic system with its cause system, analysis frame and the theoretical prerequisite as our system. Around these goals, We must establish a Macroscopic Service Law system whose head is getting job fully, wings are the income law of rising and financial basic law, eliminate three fissions making market apart with various financial tools, create equal employment opportunity, make country and the masses rich..

我们废除了计划经济体制，应该将计划经济体制的理论前提、分析框架和目标体系放进历史博物馆，采用更加科学的市场经济体制的理论前提、分析框架和目标体系，并围绕这些目标建立一个以充分就业与收入提高法为龙头，以财政基本法、金融基本法为两翼，运用各种财政工具消除现实市场存在的三种分割（地域分割、信息分割、制度分割），创造平等就业机会，使国家和民众走上富裕之路的完整的&宏观服务法&体系。

This dissertation is divided into four chapters altogether:chapter one is the introduction,introducing the Hore component and its important characteristic and putting forward the basic task;Chapter two introduce the principle of the auto-tracking system and respective parts of the auto-tracking system;Chapter three introduce the applications of auto-tracking system under static condition and dynamic condition and give out the experiment results;Chapter four introduced the displaying system,communicating system and the applicability of the auto-tracking system to other sensors.

本文共分为五章：第一章绪论中，介绍了霍尔元件及其一些重要特性，并提出了测量系统的基本方案；第二章详细介绍了测量系统各部分的构成及原理，特别是对直流通道、温度补偿模块和音圈电机为核心的随动机构的论述；第三章介绍了实际系统在静态测量和动态测量两种模式下的应用及实验结果；第四章介绍了系统的显示功能和远程通信功能并讨论了系统对其它传感器的适用性。

Its structural pattern of"three keylines guidesand five criteria" which was used in building its own system can be used for reference inbuilding the system of our socialist contract culture. m tring to use " the three key-lines-"freedoni to hulnan","equality to society","democracy to polities-as ...

本文在建设有中国特色社会主义理论的指导下，尝试以&自由为人本之纲&、&平等为社会之纲&、&民主为政治之纲&等三纲为主轴，以&利&、&理&、&义&、&信&、&法&等五常为基本准则来建构社会主义契约文化形态的理论体系，以期达到纲常相济、纲举目张的系统效应。

Its structural pattern of"three keylines guidesand five criteria" which was used in building its own system can be used for reference inbuilding the system of our socialist contract culture. m tring to use " the three key-lines-"freedoni to hulnan","equality to society","democracy to polities-as themai...

本文在建设有中国特色社会主义理论的指导下，尝试以&自由为人本之纲&、&平等为社会之纲&、&民主为政治之纲&等三纲为主轴，以&利&、&理&、&义&、&信&、&法&等五常为基本准则来建构社会主义契约文化形态的理论体系，以期达到纲常相济、纲举目张的系统效应。

Based on the traditional mechanical model the buble point method of three diagonal matrix, an neural network model of gas-liquid equilibrium computation for liquid air, which makes system presure P and equilibrium component of liquid phrase x1,x2,x3 as input nodes makes system temperature T, equilibrium component of gas nitrogen y1, equilibrium constant of argon and oxygen k2, k3 as output nodes, insteads of the buble point computation of the three diagonal matrix , thus a improved distillation model is built.

在传统的机理模型三对角矩阵法中的泡点法基础上，将体系压力P，平衡液相组成x1， x2， x3 为输入节点体系温度T ，平衡汽相氮组成y1 及氩、氧的相平衡常数k2， k3 为输出节点的神经网络液体空气汽液平衡计算模型，取代三对角矩阵法中泡点计算，从而建立改进的精馏塔模型改进模型用于空分塔的模拟计算，不仅计算速度快，计算结果与机理模型结果非常接近，且符合设计要求，对实现产品质量的在线监控具有一定的指导意义

This article analyzes systematically the work process of fuel injection system in detail. It analyzes the fault fundamentals and its influence of three coupling parts in the high pressure oil road and the injection process, three coupling parts include plunger coupling parts, delivery valve coupling parts and needle valve coupling parts. It discusses the pulse situation of fuel pressure under the every kind of typical fault model, and regarding this as according to pick up the pulse signal of pressure from the high pressure pipeline, and process wavelet decomposition, picks up the of parameter fault, make use of the model identification technique, realizes to the intelligent diagnosis of fuel injection system fault.

文中系统地分析了燃油系统的工作过程，对高压油路中三偶件(柱塞偶件、出油阀偶件、针阀偶件)、喷油过程等的故障机理及其影响进行了分析，讨论了各种典型故障状态下的燃油压力波动情况，并以此为根据，从高压油管处提取压力波动信号，提取故障参数，利用模式识别技术，实现了对燃油系统故障的智能化诊断。

A COMPARATIVE STUDY ON KINETICS OF ION EXCHANGE IN BINARY SYSTEM FITTED BY THREE MODELS$$$$SONG YINJIE;ZHAO AIMIN（Department of Modern Physics, Lanzhou University,730000）ABSTRACT A"three-necked flask"technique is employed for the study of the kinetics of H~--UO ionexchange system with strong acidic cation exchange resin.

文章以强酸性阳离子交换树脂作交换剂，用三颈瓶法研究了H￣＋UO￣＋离子交换反应动力学。

The results show that fuel consumption and running unevenness of three-cylinder internal combustion water pump are higher than those of engine driving pump system while effective thermal efficiency of three-cylinder internal combustion water pump is less than that of engine driving pump system.

并与发动机驱动柱塞泵系统的外特性进行了对比分析，结果表明三缸内燃式水泵的燃油消耗率和运转不均匀度明显低于发动机驱动柱塞泵系统，而有效热效率明显高于发动机驱动柱塞泵系统。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。