随机分类 meaning in English

random assortment
random classification

( 5 ) the paper presents a new random - classification construction method based on half - facet data structure
( 5 )基于半面数据结构，提出了一种新的随机分类构造法和两种生成实体破片的方法。
( 2 ) based on the object prototype represented by half - edge data structure , the paper presents a method to construct fragments in explosion , which is called random - classification construction method
( 2 )针对半边数据结构表示的物体原模型，提出了物体爆炸时构造破片的理论方法，称之为随机分类构造法。