sdai

Information Extracting and Modeling for STEP Application Protocol Based on SDAI

基于SDAI的STEP应用协议的信息提取与建模

Research Development Information Retrieval System of STEP-NC Workpiece Programme Based on SDAI

基于SDAI的STEP-NC加工程序信息提取系统的研究和开发

SDAI is the standard data access interface of STEP .

标准数据存取界面SDAI是STEP的标准应用程序界面，应用程序通过SDAI存取产品数据。

Integration of CAD / CAM System Using SDAI

采用标准数据接口SDAI的CAD／CAM系统集成

A data describe language of database supporting SDAI

一种支持SDAI的数据库模式定义语言

Implementation of An Open and Extensible SDAI System

一个开放可扩展的SDAI实现系统

The geometry information was extracted through SDAI early binding , and the model was rebuilt .

用早联编方式实现了标准数据访问接口（SDAI），实现了几何信息的提取和模型创建。

But SDAI only offers an abstract definition of operating environment and interface functions without the detail about implementation .

l但是，SDAI规范只对数据操作的环境和接口函数进行了抽象的定义，1没有给出具体的实现细节。采用不同的数据存储系统和程序设计语言，〕SDAI的实现便不相同。

The Research of STEP-NC Interpreter Based on SDAI

基于SDAI的STEP-NC解释器的研究

Implementation technologies of SDAI session , access to remote repository , data dictionary and late binding are also described .

还阐述了用EJB实现SDAI会话，访问远程repository以及SDAI数据字典和迟联编的实现机制。

Auto-modeling and Post-processing of FEM Based on STEP / SDAI

基于STEP/SDAI的有限元自动建模和后处理技术

For integrating product data on the Internet , the STEP SDAI ( Standard Data Access Interface ) based on Java language is implemented .

为了在Internet网上共享产品数据，基于Java语言实现了STEP标准数据读取接口SDAI。

SDAI is the standard data access interface adopted by STEP , it aims to provide a uniform data access interface standard between different systems .

SDAI是STEP采用的标准数据访问接口，是针对不同的数据存贮技术而提供的统一的数据存取接口标准。

Re-display of the solid by OpenGL using the solid 's geometry and topology information extracted from SDAI .

采用OpenGL技术按照提取的实体信息对实体进行重现。

Chapter two introduce the pivotal support technology , includes STEP and STEP-NC 、 operating principle and structure of SDAI 、 EXPRESS language and OpenGL technology .

第二章主要从开发本系统的角度出发介绍了相关的支撑技术，包括STEP的发展状况及与STEP-NC的关系、SDAI的工作原理和组成结构，以及EXPRESS语言和OpenGL技术等。

SDAI is the standard data access interface of STEP . It defines a functional interface between an engineering application and one or more collections of data described using EXPRESS .

SDAI是STEP的数据接口规范，它为工程应用与EXPRESS描述的数据模型间定义了一个功能界面。

Thirdly , the key technology of STEP & object-oriented EXPRESS language is described . The data type and information model of EXPRESS are analyzed and preliminary research on SDAI , early binding and late binding are given .

论述了STEP的关键技术&具有面向对象特性的EXPRESS语言，分析了EXPRESS语言的数据类型和信息模型构成；初步研究了SDAI技术以及早联编和晚联编技术。

Moreover , the paper discusses the system architecture and function modules for a product data management ( PDM ) system prototype , the role of SDAI in the system and applications in the data exchange between CAx systems .

同时给出了一个产品数据管理（PDM）原型系统的系统结构和模块划分，以及SDAI在这一系统中的作用及在CAx系统间的数据交换中的应用。

This paper discusses the STEP / SDAI standard and its language binding concept , and presents the information extracting and modeling technology for application protocols in STEP by developing a solid modeling software based on SDAI 's C + + early binding .

该文论述了STEP/SDAI标准及其语言联编概念，并通过一个采用SDAI的C++早联编技术的建模软件的开发过程展示了基于SDAI的STEP应用协议的信息提取及建模。

The basic idea of realizing data exchange through STEP neutral file which is generated by using SDAI ( Standard Data Access Interface ) is illustrated . An approach for the realization of information integration among CAD / CAPP systems and a complete part information mode are presented .

说明了基于标准数据存取接口（SDAI）生成STEP中性文件实现数据交换的基本思路，提出一个CAD与CAPP系统通过STEP中性文件实现信息集成的方案及一个完整的零件信息模型。