“泰勒展开是否以收敛圆为割线”问题是解析开拓理论研究的重要课题，但对此国内外尚无全面细致地研究。

The research on that "Taylor series generally considers its convergent circle as the cut secant" is an important problem of analytic continuation.

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该方法的圆中数定义简单，计算量小，且易于收敛。

This method features simple definition for the circle median number, low computation and easiness to converge.

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用一个收敛很快的级数构造了非圆截面、线性电流分布环形等离子体的磁流体平衡解。

The MHD equilibrium solutions of a toroidal plasma with non-circular cross-section and linear current distribution are written in terms of a fast convergent series.

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