国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Knowledge representation and matching are key problems of expert system. By inducting basic-element theory, the basic-element representation of production, semantic network, frame and case are fulfilled, and extension knowledge representation model of diagnostic expert system is set up, which contains source, test and result three basic-element. The matching process needs two steps, first match source basic-element, second match test basic-element. At last, the test data of an air data computer is used to match the extension knowledge. The results are consistent with the fact.