The second part mainly analyzed the group structure of local elites in the early half of 20th century from knowledge structure and career structure.
第二部分，从知识构成和职业构成两个方面，分析了20世纪前半期精英的群体构成。
It can guarantee the detection accuracy. In the second step, we introduce the prior knowledge about the road structure to group the line element into macroscopical structure.
第二步引入公路结构特征的先验信息，对提取的线基元进行组织，获得比较宏观的线性结构。
It can guarantee the detection accuracy. In the second step, we introduce the prior knowledge about the road structure to group the line element into macroscopical structure.
第二步引入公路结构特征的先验信息，对提取的线基元进行组织，获得比较宏观的线性结构。
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