By use of a econometric model this paper analyses the benefit of technical innovations.
本文用典型的数量经济分析方法研究技术发明的效益。
With the econometric method the macroeconomic model of foreign debt is built.
文中采用计量经济学方法，建立了外债的宏观经济模型。
With the econometric method the macroeconomic model of foreign debt is built.
文中采用计量经济学方法，建立了外债的宏观经济模型。
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