面向对象设计

Today, there are many commercial CAD development platforms, such as CV-DORS, ACIS and DESIGNBASE. But these products all lay emphasis on geometry modelling.

面向对象的CAD开发环境则是从产品建模的角度出发，其中心思想是在开发环境的核心完成设计信息的管理，并提供应用系统的开发界面。

In the CAD system for progressive dies, the method is introduced to automatically generate geometric models of stampings through inputting the product drawings by AutoCAD and picking-up the entity information from DXF files and programming with ObjectARX and C＋＋ language, at the same time, generating algorithm of close contour lines and unidirectional chain-table structure are used to express the models of stampings, the class and direct judgment of contour lines are realized and the entity existing side is judged by analytical geometry, which efficiently solves the problem of automatic input of drawings of stamping and providing information of process planning and mold design.

在级进模CAD系统中，将产品的图形信息以AutoCAD直接绘图形式输入到计算机中，从AutoCAD的图形交换文件中提取信息，采用面向对象的二次开发工具ObjectARX和C＋＋语言编写接口程序，并通过封闭轮廓的生成算法自动生成冲裁零件的几何模型，且用单向链表的形式加以表达，同时对冲裁零件图形的轮廓进行分类与走向判定，采用简单的解析几何方法对实体存在侧进行判定，有效地实现了零件图形的自动输入，为级进模CAD系统的工艺计算和模具工作部分的设计等提供了必要的信息。

Middleware be used asynchronous data transmission as a possible means of transmitting information to enhance the system performance.

根据面向对象编程思想，系统设计实现了独立于通信手段和终端设备的纯JAVA监控系统，使得整个系统具有很强的跨平台特性和可扩展性。

The paper analyses the objects and characteristic of the archives management of the electronic power attemper enterprise, the function and the meaning, the cataloging method and working flow under the combination of practice.

对实现系统中重要功能的技术进行了讨论比较，利用面向对象的思想，作者对电子档案管理系统进行了设计，给出了系统的混合结构模型。

Last, under the direction of software engineering, we design and come true the automatic programming system adopting object oriented method.

最后，从软件工程的角度出发，采用面向对象的方法设计并实现了该自动编程系统。

Aim\ For the requirement of pneumatic characteristic testing of modern battleplane, the Institute of Fluid Mechanics of BUAA developed the 1.2 m×1.0 m multipurpose water tunnel with modern control theory and measurement technology.

目的 针对现代战斗机气动性能测试需要，北航流体力学所研制开发了 1 。2 m× 1 。0 m多用途低速水洞。方法系统的设计运用现代控制理论和测试技术，采用双闭环控制结构和面向对象的方法进行系统开发。

Finally, based on before-mentioned research, the paper develops two tools of a virtual reality research system named as VRDK which is a virtual reality development kit.

该漫游系统运用了面向对象的设计思路，通过用户操作指令进行驱动，实现了在虚拟场景中的环视、渐近渐远、视点间过渡浏览等效果。

A kind of implement blue print for function block configuration software module which is irrelevant to any specific protocol and reusable is proposed, which is based upon the further study and analysis of object-oriented component design technique, the optimal path planning algorithm, XML extensible description language and some other relevant techniques.

首先，在深入研究了相关领域的面向对象组件设计技术、最优路径规划算法、XML可扩展描述语言等相关技术基础上，提出了一种基于组件技术的、与协议无关且可重用的功能块组态软件模块实现方案。

Plane graphics Boolean operation of the plane and graphics, poor pay and make object-oriented programming design.

平面图形布尔运算，对平面图形的并、交和差做出面向对象的程序设计。

However, the implementation of polymorphictypes is quite different from that of the basic types and other compound types.

它有很强的功能，是所有面向对象的程序设计语言实现多态性的重要机制之一。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。