base circle

基本解释

When the cam is chiefly transferred movement, the choice of radius of base circle firstly is considered the roller's continuous rolling.
当凸轮机构主要用于传递运动时，基圆半径的选择可使滚子做连续滚动为优先考虑条件。
Here the selection of base circle radius and its effect upon the assessment of departure from roundness is discussed, and the corresponding curve is given.
这里讨论了“叠加基圆法”中基圆半径的选取原则及其对不圆度评定的影响，并作出关系曲线。
A new simple method is provided to demonstrate the concentric grade (coaxial grade) deviation of graduation circle and top circle by means of the size relation of base circle to top circle.
本文介绍一种简便的测量方法，借助于基圆相对齿顶圆间的尺寸变化，揭示并测量出分度圆与齿顶圆的同心度（同轴度）误差。