第三部分，重点从四个方面分析了逆差产生的原因，其中运用了产品生命周期理论和李光辉的显性比较优势理论。
The third part analyzes the reasons which cause the deficit from four aspects applying the theory of Product Lifecycle and the Revealed Comparative Advantage of Li Guanghui.
第三部分，重点从四个方面分析了逆差产生的原因，其中运用了产品生命周期理论和李光辉的显性比较优势理论。
The third part analyzes the reasons which cause the deficit from four aspects applying the theory of Product Lifecycle and the Revealed Comparative Advantage of Li Guanghui.
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