tractrix

等切面曲线, 曳物线

发音

US

词形变化

tractrices 复数 tractrices

释义与例句

n.
  1. 1.

    A curve that satisfies the following property: that segment of the tangent line that lies between the point of tangency and a fixed line has length independent of the point of tangency chosen.

    数学

词源

Formed after tractor, as if from a Latin *tractrīx (from trahō (“to pull”) + -trīx).

来源：wiktionary