The image is converted into vector and sketch node coordinate is withdrawn automatically by computer, two dimension the point gather the matrix is formed.
将图像转换为矢量图形，由计算机提取图形节点坐标形成二维点集矩阵。
The key point of this method is that a simple formula has been derived for estimating step length. Therefore it is easy to find the unknown node coordinate from known one.
其关键点是导出了求估算步长的一个简单公式，从而很容易的由已知节点坐标求出到下一节点的坐标增量。
It is shown in this paper that the isoparametric coordinate transformation is independent of the lacotion of the additional nodes for straight-side eight-node modified isoparametric element.
本文证明了直边八节点修改等参元的等参坐标变换与单元附加节点的总体配置无关；
In the strength analysis of the pumping jack of a pumping unit, it is very difficult to determine the reference node position under global coordinate system.
在抽油机支架强度分析中， 在全局坐标系下确定主惯性平面方位的参考节点的位置非常困难。
In the strength analysis of the pumping jack of a pumping unit, it is very difficult to determine the reference node position under global coordinate system.
在抽油机支架强度分析中， 在全局坐标系下确定主惯性平面方位的参考节点的位置非常困难。
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