答案包括多个属性，但是最重要之一的是由这些交换机类型的新分类定义的。

The answer covers multiple attributes, but one of the most important is defined by the new classification for these switch types.

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分类系统通常包含分类的层次结构，这些分类定义了该分类中的实体。

Classification systems are typically comprised of a hierarchy of classes that define the entities in the taxonomy.

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对羊毛纤维弱节的几何形态特征，采用SEM观察进行了分类定义和表征。

The geometrical morphology of the weak links on wool fibres has been described, classified and characterized by means of the observation of scanning electron microscope (SEM).

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