This is the first main crux of dynamic theory.

这是动态学说第一个主要的难题。

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Based on orbit dynamic theory, the close interception model was set up.

根据轨道动力学理论，建立了近距离空间拦截轨道的数学模型。

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Based on orbit dynamic theory, the close interception model was set up.

根据轨道动力学理论，建立了近距离空间拦截轨道的数学模型。

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