回顾这10年，我可以看到这个产业一直都有高低起伏。

Looking back on those 10 years, I can see there'd always been ups and downs within the industry.

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第二章是对产业结构理论和区域竞争力理论的综述和回顾。

The second chapter is the summarization about the industrial structure theory and the region competitive capability theory.

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首先，本文回顾了产业集群外部经济效应理论，为后续的比较研究和分析提供理论基础。

First of all, this paper reviews the industrial cluster external economy effect theory; offer the theoretical foundation for subsequent comparative study and analysis.

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