无对角线四边形法是建立建筑方格网中二级网的有效方法。对于建筑方格网来说，重要的方面之一是可以评定网中任意元素的精度。
One of the important factors involved in building a square grid is the way to estimate the precision of any elements in the grid.
剪变弹簧，四边形面的对角线重合。提供抵抗布料剪切变形的力。
Shear Springs are built on the diagonals of quad faces and provide some resistance to shearing forces in the cloth.
思路是设计一个矩形辅助窗口，并利用“四边形对角线交换”技术来获得简单多边形的三角剖分。
The TSP problem is solved by designing an auxiliary square window and utilizing a "quadrilateral diagonal exchanging" technique.
思路是设计一个矩形辅助窗口，并利用“四边形对角线交换”技术来获得简单多边形的三角剖分。
The TSP problem is solved by designing an auxiliary square window and utilizing a "quadrilateral diagonal exchanging" technique.
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