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- He then treated the evolute of a plane curve. 然后他讨论了平面曲线的渐屈线。
- A plane curve formed by the locus of points equidistant from a fixed line and a fixed point not on the line. 抛物线到一固定直线和不在直线上某一固定点等距的点的轨迹所形成的平面曲线
- Something,such as a ring,shaped like such a plane curve. 圆形物，环状物形状类似于圆的东西，如戒指
- Something, such as a ring, shaped like such a plane curve. 圆形物，环状物形状类似于圆的东西，如戒指
- A plane curve everywhere equidistant from a given fixed point,the center. 圆，圆形从定点(圆心)等距离到任一点的平面曲线
- A plane curve everywhere equidistant from a given fixed point, the center. 圆，圆形从定点（圆心）等距离到任一点的平面曲线
- A perpendicular, especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve. 正交一条垂直线，尤指一条相对一条平面曲线的切线垂直线或一条相对一条空间曲线的平面切线垂直线
- A plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the cone. 抛物线一个直立圆锥和平行于该锥体中轴的平面相交形成的平面曲线
- A plane curve formed by the locusof points equidistant from a fixed line and a fixed point not on the line. 抛物线到一固定直线和不在直线上某一固定点等距的点的轨迹所形成的平面曲线。
- A perpendicular,especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve. 正交一条垂直线，尤指一条相对一条平面曲线的切线垂直线或一条相对一条空间曲线的平面切线垂直线
- When the Lanes joint a Plane curve,such as a clothoid or an arc with small radius,itll need repeatedly compute and adjust. 尤其是变速车道起点对应的主线线形为圆曲线或缓和曲线时,往往反复试算调整,也难以得到比较理想的设计方案。
- Nagata's conjecture concerns about the lower bound of the degree of a plane curve with preassigned singularities in general position. Nagata猜想是关于满足特定条件的平面曲线的次数的下界的猜测，这些特定要求是指此类曲线 过平面上给定的若干个一般点，并在相应点有给定的重数。
- A plane is gone to order from France. 从法国去订购一架飞机。
- They planned to highjack a plane. 他们计划劫持一架飞机。
- A plane this size can't fly off such a short runway. 这样大的飞机无法从这么短的跑道上起飞。
- This is a plane curve. 这是一条平面曲线。
- A plane fleeted over the top of the hill. 一架飞机掠过山顶。
- My mother is scared to fly in a plane. 我母亲怕搭飞机。
- I can hear a plane flying overhead. 我听到一架飞机正从上空飞过。
- A plane figure with four sides and four angles. 四边形有四个边和四个角的平面图形
