公切线是指同时相切于两条或两条以上的曲线的直线，例如和两个圆相切的直线叫做这两个圆的公切线。如果两个圆在公切线的同侧，则这公切线叫外公切线；如果两个圆在公切线的异侧，则叫内公切线。
内公切线 Internal Common Tangent ; interior common tangent ; inner common tangent
二圆公切线 common tangent of two circles
公切线法则 Common tangent law
多相平衡的公切线原理 Common Tangent Line for MultiPhase Equilibrium
切线公式 tangent formula
给出了求解公切线的算法和网络搜索球机制的算法。
Given the algorithm for solving common tangent ball mechanism and network search algorithms.
讨论了圆的切线及两圆内外公切线的一般求法及步骤。
The general ways and procedures of working out internal and external co-tangents of circles are discussed.
在射影几何的范畴内，全面地论述了两二次曲线的公有点和公切线的图解问题。
This paper deals with the graphics of the intersections and common tangents of two conics according to projective geometry .
应用推荐