sub - group

英 美
  • 小群体
  • group n.群;组;团体;集团v.聚合;成群、组;把...聚集;把...分类
  • sub n.潜艇;替代品vi.替代vt.转包合同
名词 subgroup:
  1. a distinct and often subordinate group within a group

  2. (mathematics) a subset (that is not empty) of a mathematical group