第三部分为城市旅游空间结构系统。
The third part is the system of urban tourism spatial structure.
第四部分为武汉市旅游空间结构系统研究。
The fourth part is the research on the system of tourism spatial structure in Wuhan city.
第2部分是国内外研究进展，总结了国内外旅游空间结构相关研究进展。
Part 2 is the relevant research progress at home and abroad. Summe up the domestic and international spatial structure of tourism.
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