该模型在普通转向器模型的基础上考虑了转向齿轮、齿条等构件的变形和液压特性对系统动力学特性的影响。

This model takes the effect of the steering gear and rack's deformation and the dynamic characteristic of hydraulic system into account on the basis of common steering system.

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以系统动力学(SD)模型为主体，结合投入产出法、乘数法和计量经济学模型，进行了港口经济影响分析。

Analysis of port's influence on economy is conducted based mainly on system dynamics (SD), combining also input-output method, the Mulitplier, and econometrics model.

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该模型包括了两个子模型，即水动力学子模型和生态系统动力学子模型。

This model includes two sub-models: one is hydrodynamic model and the other is ecosystem dynamic model.

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