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hierarchical classification
agric., stat.	［染色体］级系分类; 成套分类
anim.husb.	谱系分类; 级系分类
IT	等级分类法
libr.	层累制分类法等级分类法
math.	分层，分组，谱系分组
rem.sens.	层次分类
tech.	分层; 系统分组
telecom.	等级分类; 成套分类法
hierarchic classification
busin.	成套分类法
tech.	分层; 系统分组

hierarchical classification: 4 phrases in 2 subjects

Earth sciences	3
Economy	1