The abduction mapping method was introduced to deduce the transformation relation between the non-unbendable surface and the flat surface.
利用微分几何中映射理论求得非展曲面到平面变换关。
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.
用比较直接方法证明幂级数和函数在收敛以逐项微分公式；并得到了计算傅立叶数一种简便方法.
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The UN estimates that as many as 500,000 people remain in ISIL-controlled parts of western Mosul.
联合国估计大约有50ISIL掌控的西摩苏尔域内。
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划词翻译
详细解释
映射理论求得非
展曲面到平面
。
有50
ISIL掌控的西摩苏尔
