Because modern corporations must face up to lots of environment activities. The information presentation of conventional financial accounting is confronted with austere challenge. For these environment activities exist. 由于现代企业不可避免地要发生大量的环境活动,这些环境活动的存在,使传统的财务会计信息披露面临着严峻的挑战。
Some specific problems in connection with blade modeling, such as spanning characteristic mesh, interpolation of curve face modeling, precise presentation arc by second order NURBS curve, node interpolation algorithm of NURBS curve, and degree elevation and reduction etc. 深入探讨了在叶片构造过程中遇到的剖分网格确定、插值曲面构造、圆弧的二次NURBS曲线精确表示、NURBS曲线节点插入算法及其升降阶等关键性技术问题。
With object-oriented ( OO) software mode developing the application system which has a relational database, often face the question in such respects as data presentation, data access, business service offer, etc. Its crux lies in the mutual transformations of object-model and relation-model. 采用面向对象(OO)的软件开发模式开发后台为关系数据库的应用系统时,常常遇到数据表示、数据存取、业务服务的提供等方面的问题,其关键在于对象模型与关系模型的相互转化上。
According to the above theory combined with enterprises 'needs, establishing the frame of products material data system face to their recovery and recycling and developing the prototype system, presentation the system design and implementation of each module detailedly. 依据该基础理论,结合企业需求,建立了面向回收再利用的产品材料数据管理系统的总体框架并开发了原型系统。