圆弧可以大量短直线模拟，弦长偏差是圆弧与直线的垂直距离。

Chordal deviation is the perpendicular distance between the actual curve and the approximating line segments.

youdao

圆弧可以大量短直线模拟，弦长偏差是圆弧与直线的垂直距离。

Chordal deviation is the perpendicular distance between the actual curve and the approximating line segments.

youdao