In the main-process, the coordinates of nodal points on part outline curve can be calculated by replacing this curve with a linear approximation. The codes expressed in NC program form which can be recognized by NC machine tool are got according to the coordinates of these nodal points in the post-process.

在前置處理中毛片最新网址，用直線逼近零件輪廓，得到輪廓曲線的節(jié)點坐標：在后置處理中淫荡的视频，根據(jù)這些節(jié)點坐標按照數(shù)控程序的格式得到數(shù)控機床可以辨認的程序代碼欧美牲交A欧美牲交aⅴ一。

nodal curve：結點曲線

niveau surface 等位面 | nodal curve 結點曲線 | nodal line 交點線

nodal cubic curve：結點三次曲線

multiple rating curve 復式率定曲線(水位流量的) | nodal cubic curve 結點三次曲線 | no-load saturation curve 無載飽和曲線