齿顶圆半径 meaning in Chinese

outside radius
radius of addendum
tip radius

The acceptability our rejection and the depiction of some content in the course " mechanisms and machine theory " is discussed , ( e . g . , group dividing , solving steps of the graphical method for vector equation , versions and methods for analytical kinematic analysis , inversion design for linkage mechanisms , crank angle between the two limiting positions , design formulae for cam mechanisms , classification of combined mechanisms , formula of the radius of addendum circle of gear , , balancing of machinery , etc . ) and some new opinions are presented
摘要就《机械原理》课程的某些内容（如：拆杆组的方法、矢量方程图解法的解题步骤、运动分析解析法的版本和方法、连杆机构的反转法设计、极位夹角、凸轮机构设计公式、组合机构的分类、齿轮齿顶圆半径公式、机械的平衡等）的取舍和叙述进行探讨，提出一些新的看法。