| 单词 | 平面曲线 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔circle〕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美国传统〔conic section〕The intersection of a right circular cone and a plane, which generates one of a group of plane curves, including the circle, ellipse, hyperbola, and parabola.圆锥曲线：一正圆锥与一平面相切产生的一组平面曲线，包括圆、椭圆、抛物线和双曲线美国传统〔normal〕Mathematics A perpendicular, especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve.【数学】 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美国传统〔parabola〕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美国传统〔parabola〕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美国传统〔strophoid〕A plane curve generated by a point that maintains a distance from the y-axis along a straight line equal to the y-intercept.环索线：由距离y轴沿一条直线保持等于截距或距离的一点产生的平面曲线美国传统〔surface of revolution〕A surface generated by revolving a plane curve about an axis in its plane.回转曲面：通过使一平面曲线围绕该平面中的一轴旋转而产生的平面美国传统 |
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