朱先生表示山寨一般来说对于消费者而言可能是“好事”，但一旦模仿过了头就完全是违法的了，而且这些人很难被绳之于法。

Zhu says that shanzhai generally is a "good thing" for consumers, though he concedes some extreme imitations cross the line to being "absolutely illegal" and their purveyors are difficult to catch.

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目前，在CAD系统中，一般采用特征表示和边界表示的混合表示方法，以充分利用两种表示法的优点。

At present, the CAD system always USES hybrid representations of feature representation and boundary representation in order to take advantages of both representations.

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针对高维几何布局问题中布局物体的建模问题，提出2-叉树方法，在一般维度下系统地给出了抽象物体的叉树表示法的构造。

With the modeling problem of layout items in high dimensional layout problem as the application object, this paper introduces the concept of 2n-tree representation.

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