Creating a feature requires that you also create a geometry, such as a point or line, and associate it with the feature.

创建一个特性还需要创建一个几何形状，比如一个点或线，并将它与此特性相关联。

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On the basis of Feature Modeling and 3d Solid Geometry Modeling, with the idea of Object-Oriented Product Design, a 3d Parametric Feature Modeling Method is applied to develop manifold.

采用特征对象化的设计思想，在特征造型和3维实体几何造型的基础上，研究液压集成块的3维参数化设计方法。

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Usually, object features include gray-scale (density, colour), feature, geometry shape, and so on.

常见的目标特征可分为灰度(密度、颜色)特征、纹理特征和几何形状特征等。

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