The abduction mapping method was introduced to deduce the transformation relation between the non-unbendable surface and the flat surface.
利用微分几何中的诱导映射理论求
非可展曲面到平面域内的变换关系。
The abduction mapping method was introduced to deduce the transformation relation between the non-unbendable surface and the flat surface.
利用微分几何中的诱导映射理论求非可展曲面到平面域内的变换关系。
A relatively direct method is expounded in this paper to prove the termwise differentiation of power series, and a simple method is expressed to calculate the Fourier coefficient.
用比较直接的
法
明幂级数的和函数在收
域内可以逐项微分的公
；
到了计算傅立叶系数的一种简便法.
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