A plane curve formed by the locus of points equidistant from a fixed line and a fixed point not on the line.

 
  • 拋物線(xiàn)到一固定直線(xiàn)和不在直線(xiàn)上某一固定點(diǎn)等距的點(diǎn)的軌跡所形成的平面曲線(xiàn)
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan