本文在分析改模方案表达的基础上，提出了一种基于粗糙集的改模知识归纳模型。

With the increase of injection mould repair schemes, knowledge induction becomes the key to using knowledge effectively in making injection mould repair schemes.

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若方案有每次操作的活胎出生率，要明确方案表达的计数将双胎作为一次而不是两次成功的妊娠。

If a program cites a live birth rate for each procedure, be sure that the program representative counts twins as one successful pregnancy, not two.

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但在发明摄影术后的几十年里，这个问题反映了对如何将机械媒介融入传统艺术表达方案的探索。

But in the decades following the discovery of photography, this question reflected the search for ways to fit the mechanical medium into the traditional schemes of artistic expression.

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