How to use the Elasticity Approach to the Balance of Trade when we study a country's international trade balance?
急谁快给谁分，中文回答！问题翻译：如何使用弹性的方法，以贸易差额研究一个国家的国际贸易平衡?。
This indicates that the spring analogy method and the elasticity approach can be applied in the numerical simulations.
这说明本文中所采用的弹簧近似方法和弹性体方法都能很好地应用到数值计算中去。
Firstly, this paper reviews relevant classic theories, especially introduces the Elasticity Approach and the Imperfect Substitute Approach. Then the relevant literature on the domestic is sorted out.
接下来对国内外相关文献进行了梳理，从应用弹性理论和应用其他方法两种角度考察了国外的主要研究成果。
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