【摘要】 将数据访问技术应用到轴承CAD系统开发中 ,解决了轴承CAD系统与设计所需数据间的调用和连接问题 ,能简洁高效地实现自动检索轴承标准尺寸和轴承非标准尺寸的交互式输入 ,使轴承CAD系统很方便地调用标准工程数据库 ,有效地提高了产品设计效率。更多还原

【Abstract】 The use of Data Access Object(DAO) in the development of bearing CAD system has solved such problems as transference and connection between the system and the data needed in design of bearing CAD system,and made it possible to search automatically standard dimension of bearing and to input unstandard dimension of bearing alternatly.Meanwhile,bearing CAD system can conveniently access standard project database,consequently,the product designing can be improved efficiently.更多还原