一、体系分类法的发展等级列举式的图书分类法,是用等级来表示类目之间的从属关系.从上位类属概念到下位类属概念逐级展开,直至区分到最小一级类目为止.它用详尽的类目列举来显示一组并列类目的完整性,并尽量用树型结构的形式,在类目表上把类目系统地排列起 First, the development of system taxonomy Enumerated book taxonomy is used to represent the level of subordination between categories.From the upper genus concept to the lower genus concept level by level, until the distinction between the minimum level of classification It uses exhaustive category enumeration to show the completeness of a set of side-by-side categories and systematically arrange the categories on the category list as far as possible in the form of a tree structure