外部系统的性质、其接口以及信息和控制流对体系结构中的技术构件的下游规范有帮助。
The nature of the external systems, their interfaces, and the information and control flows help in downstream specification of technical artifacts in the architecture.
文章介绍了构件的基本概念，着重对农业专家系统开发平台下构件技术实现的方法进行了探讨。
This paper introduces the basic concept of component, then discusses the method of component technology on agricultural expert systems platform.
从构件类别概念的来由和作用开始，分析了COM技术中对构件类别支持的不足，并对此提出了新的扩展和实现。
Starting with the origin of Component category in component technique, we consider it an important concept, and the support for it in COM(Component Object Model) is not sufficient.
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