The mathematical model on the factors and the extraction rate had been set up, and we defined the extraction technology parameters and basic extracting condition of Selenium polysaccharide.

建立了因素和浸提率的数学模型，初步确定了硒多糖的最佳提取工艺参数组合和基本技术条件。

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Based on the frequency response functions curve fit method, an approximate method for extraction of sloshing model parameters about the problem of nonlinear damping is derived.

本文在液体晃动等效力学模型的频响函数拟合方法的基础上，导出一种处理非线性液体晃动阻尼问题的模型参数近似拟合方法。

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Through model checking, this model can reflect the process of extraction, it can be use as a reference for further optimizing the model parameters and technology research.

通过模型检验得出模型能较好反映萃取的过程，为进一步优化模型参数和工艺研究提供了参考。

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