math and applied math : discipline of physics > point of tangency
Contents
qiē diǎn
　　Curve into a straight line, point or counter-change point of curvature
Translated by Google
No. 2
　　两条光滑曲线交于一点，使得它们在该点处的切线方向相同，则称该点为切点。
　　qiēdiǎn
　　〖point of tangency〗曲线转变为直反线的点或改变其曲率的点
English Expression
  1. :  tangent point
  2. n.:  point of tangency,  point of contact