triangular coordinate system [数] 三角形坐标系
When the material is prepared, each pipe is required to draw its developed map by using mathematics analysis, that is, common coordinate method and triangular method.
蜗壳的每一节，在下料时需要绘制展开图，采用数解法进行展开，即常用的坐标法或三角形法。
The area coordinate method has been successfully applied to construct triangular elements.
构造四边形单元时，应用面积坐标方法有其优点。
The singular integral problems emerged in calculations were solved through triangular polar coordinate transformation;
利用三角极坐标变换处理数值计算中的奇异积分问题；
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