基本产品图样、技术文件的编号制度现有两大类:一类为隶属编号制,一类为分类编号制。前者是按产品结构之间的装配隶属关系排列的早期编号办法。而后者则是按设计图样的特征(形状要素、作用、材料、工艺等)进行分类编号,以号码标识图样的特征。它是随着工业发展而出现的一种较先进、较科学的编号办法,特别适用于同类型产品的通用化、系列化、标准化,并为专业化生产奠定了技术基础。 The numbering system for basic product drawings and technical documents currently has two major categories: one is the subordinate numbering system, and the other is the classification numbering system. The former is an early numbering method arranged according to the assembly affiliation between product structures. The latter is based on the characteristics of the design pattern (shape elements, effects, materials, processes, etc.) for the classification number, the number of features identified by the pattern. It is a more advanced and scientific numbering method that emerges with the development of industry, and is particularly applicable to the generalization, serialization and standardization of the same type of products, and lays the technical foundation for specialized production.