The arch feed was replaced with bowstring feed in spatial arch interpolate, or circular arc was replaced with spatial straight line.
空间圆弧粗插补用弦进给代替弧进给，即用空间直线代替圆弧。
Several special examples for cases of spatial straight line families which involve six or less than six arbitrarily given straight lines are dissected.
对空间任意既定六条或少于六条直线的直线族，剖析了若干具体例子。
The subpixel line equations of two generatrices in two planes projected by the rotary object is obtained by the subpixel straight line edge detection method based on spatial moment.
采用基于空间矩的回转体像面目标直线边缘亚像素提取技术，获得回转体目标在每个像面上的两条母线的亚像素直线方程。
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