hypertangent

例句：

1. 1. The hypertangent of a circle is the linethat touches the circle at the point oftangency.
   圆的超切线是与圆在相切点接触的那条线。
2. 2. In geometry, ahypertangent is a line that lieson the surface of a curve and passesthrough its center.
   几何学中，一条超切线是位于曲线表面并穿过其中心的线。
3. 3. The hypertangentto a parabola is the linethat touches the parabola at thepoint of tangency.
   抛物线的超切线是与抛物线在相切点接触的那条线。