在单因素试验基础上，利用二因素中心组合设计原理及响应面法分析建立二次回归模型。
Based on the results of single-factor experiments, a quadratic regression model was established with the help of two factors central composite experimental design and the response surface method.
采用响应面法设计优化实验。
Response surface methodology design was used to design and evaluate the experiment.
最后用中心组合设计和响应面分析法，确定了主要影响因子的浓度。
Finally, the concentrations of key components were confirmed by central composite design and response surface methodology.
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