Physical model: - There are two types -iconic and analog model.

物理模型：-有两种类型-标志性和模拟模型。

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An alternate approach is to set up an analog model of the engine system.

另一种方法是建立发动机系统的模拟模型。

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An alternate approach is to set up an analog model of the engine system.

另一种方法是建立发动机系统的模拟模型。

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