This article utilizes the theory ofinvoluteofcircle and the formula of the distance between two points to obtain two radiated measurement ways of defining the starting line.
本文根据圆的渐开线原理和两点间的距离公式，得出两种用放射式丈量法测画不分道跑起跑线的新画法。
2
This paper presents a new method of form-grinding ofinvolute gears, using a segment ofinvolute curve produced by a smaller base circle disk to replace a desired involute curve.
本文采用较小基圆渐开线代替齿轮渐开线，创造出新的渐开线成形砂轮修整器。
3
With the tool ofcircle vector function, the involute helix profile with error is given, and with the media of engagement line, the error compensation mathematical model is established.