The reasoning strategy is one ofthemost important factors anecting the performance ofa CAPP system.

The knowledge representation, the diagnosis inference strategy and realization of dynamic database are studied.

Based on the study of the inference and control strategy of ES, a new inferential strategy which named "consultation mode inferential and control strategy" is presented.

Many researchers at home and abroad have absorbed in the study on the learning strategies during the few decades, but only few focus mainly on the inferential strategy training, especially about the students inferential strategy in reading in middle school.

General reasoning strategy and hybrid reasoning strategies and layered strategy of knowledge management for process planning or process decision making problem are presented.

The study investigated spatial and nonspatial relation reasoning abilities in adolescents with nonverbal learning disabilities under figure and word conditions, and analyzed their reasoning strategies.