Based on these models , the author discussed how to realize the visualization of 3dcm . the method of 3d - visualization is adopted object - oriented language ( visual c + + ) and 3d graphic tool ( opengl ) to develop 本文在建立了三维城市模型的基础上，就如何实现三维城市模型的可视化方法进行了讨论，主要采用面向对象的语言visualc ~ ( + + )结合三维图形开发工具opengl来实现。
In this thesis , associated knowledge about o - r mapping is introduced firstly , then the design idea and implementation method of the o - r mapping model with c + + are analyzed in detail . finally , the test data and the result analysis about the software are given 但是由于目前的对象-关系数据库映射软件基本上都是使用完全面向对象的语言开发的,比如java , smalltalk等等;使用用c + +语言开发的对象-关系数据库映射软件还未见有报道。
Avi bryant had created a continuations - based server in the ruby programming language , but left for the squeak dialect of smalltalk - a pure , object - oriented language invented in the early 1970s , when ruby continuations proved to be a little too unstable . they ve since been fixed Avi bryant使用ruby编程语言创建了一个基于continuation的服务器，但是留下了smalltalk的squeak方言20世纪70年代的初期，当ruby continuation被证明是不太稳定（后来被修复）的时候，发明的一种纯面向对象的语言。
Main characteristics include object - oriented language core , interfaces between vera core and hdl implemented by interface definition and port variables , complex concurrency control implemented by programming construction ( fork / join ) and data structures ( event , mailbox and semaphore , etc ) . all these help vera successfully model hardware properties 主要的特点是：面向对象的语言内核；通过界面定义和端口变量等实现了vera语言内核和硬件描述语言的接口；通过编程结构fork join和数据结构(事件、邮箱和旗语)来实现复杂的并行控制，实现对硬件特点的模拟。
Along with the development of the computer technology , we massively use the relational database to manage our informations , and we control these informations with the application program . now , the object - oriented technology is widely used by the programmers . because the relational database and the object are two kind of completely different technologies , the application programs mismatch the relational database . in order to solving the problem as far as possible , the programmers develop a new technology , which is the object - relation database mapping ( o - r mapping ) 目前随着计算机信息技术的发展,我们大量地使用关系数据库来管理我们的相关信息,在管理这些信息的过程中,由于关系数据库本身的专业性,使得信息管理人员不可能直接去操纵数据库,我们必须针对用户的需要开发数据库应用程序。随着对象技术的普遍使用,应用程序现在基本上都是使用面向对象的语言进行开发。
The 3rd charpter mainly talks about ldap - a kind of directory access protocol , it is a very better way to solute distributed messages store . the 4 ' 1 " charpter discribes serveral concepts , such as : charset , encoding . in the end of this charpter , i presents the best solution for the confused code - utf - 8 . the last charpter , after analyzed the shortcoming of the old email system , i designs and achieve the webmail part of a email system by applying the serveral conceps mentioned above 第一章主要介绍电子邮件系统的基本概念和几个重要的协议；第二章主要介绍面向对象的概念、面向对象的语言java和数据交换格式xml 、以及平台无关的语言java加上与平台无关的数据xml的完美结合能够完成最为复杂且弹性最好的分布式应用；第三章主要介绍目录服务器及典型实例ldap ；第四章主要介绍字符集与乱码问题以及目前解决乱码问题最好的方式是utf - 8 ；第五章分析传统电子邮件的不足之处和当前商业电子邮件的需求，结合bluemail开发实例，对电子邮件系统的webmail部分进行了分析、设计和实际应用。
So it is very important to research related technique to develop complete courseware . this system is developed with the object - oriented language visual basic6 . 0 , basing on the summary of other cai softwares , and is applied in the universities , and can be used to make and mange coursewares and testbases of many subjects altogether 因此研究相关技术开发完备的cai教学软件具有非常重要的现实意义。本课题是在总结了相关教学软件的基础上，使用面向对象的语言visualbasic6 . 0开发的，应用于大中专院校的，适合多门学科的教学课件及考试题库的制作、建立、管理与使用的通用平台。
Still further , applies rough sets in expert system to diagnose fault has great potentiality and good prospect , also through object - orientated language develops fault diagnosis expert system of fan . the system ’ s practicability is strong and the interface is friendly , can be generalized into the fault diagnosis of fan kind rotary machines , and the diagnosis system will be of great significance in engineering 将粗糙集理论应用在专家系统中进行故障诊断有着良好的性能和发展前景。由面向对象的语言开发的风机故障诊断专家系统界面友好、实用性强,可以推广到风机类旋转机械的故障诊断中,具有重要的工程应用价值。
