Then a new definition of fractal dimension-extreme value weighted mean fractal dimension is given, and with it the feature matrix is extracted. At last, a cor…

定义了一种新的图像分数维一极值加权平均分数维，用于提取虹膜特征；

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This provides an additional dimension of modularity so that, even within a given language unit, it is possible for you to use only specific subsets.

这就对模块性提供了更多的空间，即使对一个已给定的语言单元，你也有可能只使用某些特定的子集。

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A dimension specified for a given feature on one level of drawing, (for example, a detail drawing) is not mandatory for that feature at any other level (for example, an assembly drawing).

一个图纸层面上的给定部品的尺寸(比如，细部图)并不能强制地标注在另外一个层面的图纸上(比如说，装配图)。

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