...索引检视表 (Indexed Views) 资料分割精灵 (Partition Wizard) 连结 (Linked) Cubes 超大型维度 (Very Large Dimension) 个人版：供个人使用的资料库管理系统。
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Feature space is high dimensional and sparse in text categorization, the process of dimension reduction is a very key problem for large-scale text categorization.
文本分类中特征向量空间是高维和稀疏的，降维处理是分类的关键步骤。
It's dimension is large, and requirements of accuracy, tolerance and roughness are very strict. It is different from conventional large UHV chamber.
该机加真空室的尺寸大，尺寸精度、形位公差及粗糙度要求极高，不同于常规的大型超高真空室。
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