knick point

• 变坡点,反弯点,裂点

knick point的用法和样例：

例句

1. This paper also introduces a method using the gradient change points of vertical sections for the virtual transponder to realize single point locating.
   文中还探讨了应用纵断面变坡点作为虚拟查询应答器实现单点定位的方法。