专家系统是一套能够整理并呈现既有知识的电脑程式。
An expert system is a program which organizes and presents pre- existing knowledge.
一种适于开发专家系统的语言、操作系统和软件包，它是由美国卡内基－梅隆大学开发的。
A combination of language, operating system, and software packages suited to the development of expert system. Developed at Carnegie-Mellon University.
使用专家系统而发生的用户和专家系统之间的交互作用。
The interaction between user and expert system arising from the expert system's use.
在大多数基于规则的专家系统中的基本表示单元。它类似于传统数据处理中的变量，但有不同之处，属性可具有性质，而不一定代表记忆存储单元。
The basic representation unit in most rule-based expert systems. Similar to variables in traditional data processing, but different in that they may own properties, and do not necessarily represent memory storage locations.
