專家系統是一套能夠整理並呈現既有知識的電腦程式。
An expert system is a program which organizes and presents pre- existing knowledge.
一種適於開發專家系統的語言、操作系統和軟體包，它是由美國卡內基－梅隆大學開發的。
A combination of language, operating system, and software packages suited to the development of expert system. Developed at Carnegie-Mellon University.
使用專家系統而發生的用戶和專家系統之間的交互作用。
The interaction between user and expert system arising from the expert system's use.
在大多數基於規則的專家系統中的基本表示單元。它類似於傳統數據處理中的變數，但有不同之處，屬性可具有性質，而不一定代表記憶存儲單元。
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.
