球面渐开线齿廓
spherical involute tooth profile
渐开线花键
involute spline
involuted spline
involutes spline
involute splines
involute spline for transmission
involute serration
Involute spiralspline
spline
渐开线齿形
involute profile
involute gear profile
Involute tooth profile
involute gear tooth profile
渐开线型线
involute profile
involute of circle limitations