查询词典 based

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.Then the thesis expounds the basic component parts,the basic running principle,the running characteristic and transfer function of the BLDCM.And then the thesis detailedly dissertates its research pivot: the simulation of BLDCM system in MATLAB based on the method of Back-EMF and the control system of Digital Signal Processor based on the method of Back-EMF.

本文首先对无刷直流电机进行了概述，并对其相关控制方法进行了讨论，说明本文所采用反电动势法的背景和意义；接着论述了无刷直流电机基本组成环节、基本工作原理、运行特性和传递函数，然后是详述本文研究的重点：基于反电动势法的MATLAB调速系统的仿真以及基于反电动势法的DSP控制系统的实现。

Based on the factors about infrared imaging and simulation modeling,the key technology of real-time system for infrared image generation of plane background was enumerated.The infrared imaging simulation and modeling can be divided into four parts:target 3D modeling,plane trail fire,target and background infrared radiance,atmosphere transmission.The method of infrared radiance modeling with Vega was discussed.Finally the process of infrared image generation was presented based on sensor vision module of Vega.

根据红外成像理论和仿真建模特点，列举了以飞机为目标的实时图像生成系统中仿真建模的关键技术；从目标3D建模、飞机尾焰建模、目标和背景辐射建模和大气传输等几个方面阐述了红外成像建模的特点和需求；提出了应用Vega软件专用模块进行红外辐射特性建模的方法；最后给出了利用Sensor Vision模块生成红外图像的过程。

Its technology fetures include adopting plug-in technology and modulized structure to guarantee every component can be upgraded and added/removed alone; implementing 'push' mode backup by self-described data file structure to support light weight backup window and to visit backup client safely; adopting various kinds of standard TCP/IP-based internet agreement to guarantee it's expansibility; adopting XML-based message format to guarantee it's compatibility with previous versions; adopting unified resource management agreement to simplify the management of plug-in package and guarantee opening of functions.

它采用插件化、模块化技术保证各组件的单独升级和增删；采用自描述的数据档案结构实现了"推"备份模式来支持小备份窗口并保证了客户机的访问安全；采用基于TCP/IP之上的各种标准Internet协议来保证软件的可扩展性；采用基于XML的消息格式来保证软件升级换代的兼容性；采用统一的资源管理协议来简化软件插件的管理，保证软件功能的开放性。

The digital watermarking technology based on spatial domain has characterics of computer briefness and bagger embedded capability, so it has been abroad studied in the first stage of watermarking technology. But gradually it has been replaced by watermarking technology based on frequency domain because of its disadvantage of robustness.

基于空间域的数字水印技术具有运算简单，嵌入容量大的特点，在水印技术发展之初得到广泛研究，但因其鲁棒性太差而逐渐被变换域方法所代替。

Based on the available crystal structures of MMPs, the structure-activity relationship of barbiturate compounds was discussed; and the reason for imidazole-based compounds'low activity was presented.

本文结合已有的晶体结构，对巴比妥酸类作了初步的构效关系探讨，并对咪唑类化合物活性低的原因进行了初步分析，对进一步的结构改造和合理设计具有一定的指导意义。

In an approach that is similar to the progression from problem-based to project-based learning described by Barron et al.

在这种方法类似于从问题的进展为基础，以项目为基础的学习所描述的巴隆等人。

A multidimensional online data analysis model based on the business space and method base is introduced, and a framework based on the model is presented.

本文介绍了一个基于业务空间和方法库上的联机分析模型以及多维联机数据分析系统框架XOLDAS的实现技术，采用该框架可以快速开发OLAP系统并具有良好的可扩展性。

In this article, based-on content image retrieval is studied based on these two methods of texture feature of fractal dimension.

本文以上述两种不同方法提出的纹理特征为基础，以基于内容的图像检索为研究对象。

Secondly, based on the literature review and housing price research, based on the basic variables and the basic variable classification system, summarizes the commodity housing prices in China.

其次，本文在国内外住房价格研究文献梳理基础上，根据基本变量和非基本变量分类方式，系统总结出影响我国商品住房价格的主要因素。

Based on the linear MIMO model of Volterra system for blind identification, the blind identification method of Volterra system based on the basis of the noise polynomial vector space is presented.

基于 Volterra 系统盲辨识的线性 MIMO 模型，提出了基于噪声多项式向量空间基的 Volterra 系统的盲辨识方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。