Two factors affecting US-China trade deficit model exist nonlinear relationships with US-China trade deficit.There are many defects that using multiple linear regression analysis methods find multiple non-linear model.So researchers try to use function approximation formula to establish a US-China trade deficit models.%由于影响美中贸易逆差模型的两个因子与美中贸易逆差存在非线性关系,而传统的利用多元线性回归分析求多元非线性分析模型的方法存在着很多缺陷,研究者尝试利用函数近似计算的公式来建立美中贸易逆差模型.
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