According to the feature of this system, through static design and selecting component's parameter, then carrying out dynamic model's establishment and simulation of several kinds control strategies.

根据系统的特点，通过静态设计，选取元件参数，然后通过动态建模分析以及几种控制策略的仿真研究。

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The article draw up to match through a curve and estimate with parameter to establishment mathematics model according to time sequence theories, Carry on the analysis to the current urea market.

本文根据时间序列理论通过曲线拟合和参数估计来建立数学模型，对当前尿素市场进行分析。

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