This paper improves the model based on the fuzzy optimum theory, which uses the difference matrix method to compare the reference project and other projects.

采用差矩阵方法将各个方案的隶属度同基准方案隶属度进行比较，从而得到各个方案相对于基准方案的相对进步度。

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The result of fuzzy optimum design of main bearing of a diesel engine with this theory shows that, the fuzzy optimization is effective, and even more superior compared to common, optimization.

应用这一理论对一柴油机主轴承的优化设计结果表明，模糊优化是有效的，较之普通优化更优越。

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The optimum threshold determined by the theory of image segmentation is to be the crossover point of the fuzzy enhancement in order to enhance the contrast of image.

利用图像分割原理确定的最佳阈值作为模糊增强的分界点，完成对图像的对比度增强。

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