正如MC是专用对象一样，其定义也是专用类，用于定义其实例的结构和行为。

Just as an MC is a special-purpose object, its definition is a special-purpose class which defines the structure and behavior of its instances.

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利用面向对象程序设计（OOP）技术构建了纺织图象处理专用类CTDIB，并且以图象法羊毛直径测试为例介绍其使用方法。

With OOP technique, CTDIB, a class applied to textile image process has been constructed. The example of wool diameter testing explains how to use this class.

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因为示例连接器无法提前知道专用属性的存在，所以不在全局条目类中存储它们的属性描述。

Because the example connector cannot know about the existence of the ad-hoc properties ahead of time, it does not store their property descriptions in the global item class.

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