渐屈线曲线微分几何中的概念,它是曲线上密切圆圆心的轨迹。等价的描述是一条曲线的渐屈线即是其法线包络

渐屈线与渐伸线是一对相对的概念,若曲线A是曲线B的渐屈线,曲线B即为曲线A的渐伸线。每条曲线的渐屈线唯一确定,但却可以有无穷多条渐伸线。

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.