Today, no huge improvement for the automobile or airplane is in sight, and the major struggle is to limit their pollution, not to vastly improve their capabilities.

今天，在汽车或者飞机上没有值得一提的较大的改进，但这些都是在限制污染上大费周章，而并不是在性能上的大幅改善。

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With the improvement of automobile electrical degree, more and more people begin to pay attention to the fault diagnosis methods and theories of electrically controlled system.

随着汽车电子化程度的日益提高，汽车电控系统的故障诊断方法和理论受到了越来越广泛的关注。

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With the great improvement of the computer technique and the maturation of the multi-body dynamics, the multi-DOF of the automobile model was presented and the simulation results were more accurate.

随着计算机技术的长足进步，以及多体系统动力学这一学科的成熟，汽车模型的自由度越来越多，仿真结果越来越精确。

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