A family of geometric objects, such as lines, that have a common property, such as passage through a given line in a given plane.

 
  • 束一組有共同性質(zhì)的物體,如一組線(xiàn)等在已知平面上穿過(guò)一條已知直線(xiàn)的幾何圖形
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan