结果：腰上三角的形态可为四边形、三角形和不规则形；
Results: In shape superior lumbar triangle was quadrilateral, triangular or irregular.
目前迭代函数系统中的变换多限于仿射变换，而仿射迭代函数系统对于区域的任意四边形不规则剖分情形是不能实现的。
At present, the transform in IFS is limit to affine transform. However, affine IFS is unable to do anything with the anomalous dissection on discretionary quadrangle area.
不规则多边形的识别是图形识别的重要内容，本文研究不规则三角形和四边形的模糊识别问题。
The recognition of irregular polygon is very important in figure recognition. In this paper, irregular triangle and square is studied using fuzzy pattern recognition.
对X射线辐照圆柱壳体的平面应变热-力学效应进行数值模拟，需解决不规则四边形网格中的能量沉积计算问题。
To simulate the plane strain thermo-mechanical effect of cylindrical shell radiated by X-ray, the problem about energy deposition calculation in irregular quadrilateral grids must be solved.
这个空间以一个不规则四边形庭院来连接建筑的4个开口，重新定义了景观体验的视角，并以此唤醒游客对风景的感知。
This space has a central courtyard connecting four openings, re-defining the perspectives to experience the views, while stimulating the tourists' awareness of the landscape.
某些作者给出的数值结果表明，在单元形状不规则时，八节点和十二节点的四边形等参数单元的刚度变硬。
Several Authors have presented numerical results which demonstrated the stiffening of 8-node and 12-node quadrilateral isoparametric elements when distorted from a rectangular shape.
某些作者给出的数值结果表明，在单元形状不规则时，八节点和十二节点的四边形等参数单元的刚度变硬。
Several Authors have presented numerical results which demonstrated the stiffening of 8-node and 12-node quadrilateral isoparametric elements when distorted from a rectangular shape.
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