点集系的英文

• system of point sets

• 点集:    point set; point-group; set ...
• 系:    system; series
• 特殊点集系:    special system of point-group; specialsystemofpoint-group
• 线性点集系:    linear system of point groups
• 点集:    [数学] point set; point-group; set of points◇点集论 point set theory; 点集拓扑学 [数学] point set topology; 点集系 system of point-groups; system of point sets