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The research on the entry and exit barriers is an important part of industrial economics.
进入与退出壁垒的研究是产业经济学的重要组成部分。
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Market Specific Factors: Barriers to Entry and Exit
市场特定因素：进出壁垒
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Market Specific Factors: Barriers to Entry and Exit
市场特定因素：进出壁垒
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