It describes a summary of data model and programming structure, expresses the relative software, introduces the effect of STEP-NC on manufacturing. It is very important for STEP-NC.

• 介绍了STEP-NC的基本概念、数据模型、程序结构及相关辅助软件,指出了STEP-NC对制造业的影响,以及研究STEP-NC的重要性。