To solve such problems, a special method of calculation "Perturbation method for Variable Boundary problems" has been put forward, including the corresponding condition of convergence.

这里提供一种解决这类问题的计算方法——“变动边界微扰法”，并给出了微扰过程的收敛条件。

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For one thing, the three industries move toward digital convergence based on internet platform and make industry boundary vague and even disappear.

一方面，以互联网技术为基础平台，三大产业走向数字融合，使产业边界趋于模糊甚至消失；

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This paper gives some analysis about the errors, boundary conditions and computing convergence.

同时对计算的边界条件及收敛特性也进行了分析。

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