This paper established a simulation model of guided system based on vehicle dynamics, with the effect of all main factors on guided performance investigated by simulation.

根据车辆动力学建立了引导系统的仿真模型，通过仿真研究了各主要因素对引导性能的影响。

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In this paper, the author put out the cost model, gives the cost feature curve and analyses the effect of the main factors.

本文提出了铁路货物运输成本模型，依此绘制了成本特性曲线图，并对模型和比较重要的影响因素进行分。

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Moreover, the author discussed two main factors, i. e. lithological variation and section effect, which are thought to have resulted in the complexity of fault displacement model.

此外，笔者还对造成断裂位移模式复杂化的两种主要因素——岩性变化与剖面效应进行了探讨。

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