three-spline是什么意思

用法例句

The ideas for design and design method are introduced for three-spline broaches with arc pendulum profile,and their key techniques and technical data are indicated.

介绍了三键圆弧摆线拉刀的设计思想及方法 ,指出其技术关键及主要技术参数 ,论述了齿形制造精度的保证措施。