The fourth part: Analysis summary the development pattern of the industry popular science tourism by case, found problem and proposes the countermeasure.
第四部分：结合案例分析总结工业科普旅游的开发模式，发现问题并提出对策。
The fourth part: Analysis summary the development pattern of the industry popular science tourism by case, found problem and proposes the countermeasure.
第四部分：结合案例分析总结工业科普旅游的开发模式，发现问题并提出对策。
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