【摘要】 在CAD系统与计算程序协同工作中发生的数据交换,应理想地沿两个方向进行,以支持产品开发过程,这通常称为"双向数据交换".然而,如何对此概念准确理解,学术界在表述上都不尽相同.原本意义上的单向数据交换,可以按序反向地进行,而被说成是"双向"的.这样,在一种事实上每时每刻都沿双向进行的数据交换之外,还存在一个相同的提法.然而,这两种方案有根本区别的.由此,对概念进行区分,并指出其差别.更多还原

【Abstract】 In support of the product development process the data flow between CAD and calculation systems should be enabled in both directions. The common term for this topic is ’bi\|directional data flow’. But even in professional circles the usage of this term is equivocal. A unidirectional data flow can be specified ’bi\|directional’ if it’s done sequentially and counterdirectionally. In this case it is notional equal to a real bi\|directional data flow that is done continuously. Both approaches mentioned are fundamentally different. The article distinguishes the term ’bi\|directional’ and points out the differences.更多还原