Various models for plane coordinates conversion are deduced starting from their geometricalsignificance in large number of literatures.
大量文献从几何意义上出发，推导了各种平面坐标的转换模型。
2
The significance of our work lies in the revelation that, under proper geometrical constraint, the various patterns can develop through minimization of the strain energy.
作者工作的意义在于揭示了在适当的几何约束下，自组装形成的花样是总应变能最小的结果。
3
Also the calculation of power consumption, cutting force, machine tools, cutting tools, fixture design and tool optimization of geometrical parameters, cutting force has a very important significance.