In order to provide new proof for accident reconstruction, the method of occupant kinematics reconstruction using the coupling of momentum-based method and multi-body dynamics method was studied.

为了向交通事故再现提供新的依据，研究了动量冲量法与多体动力学法结合的乘员运动仿真，提出了两类算法的耦合方法。

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A green card can serve as easily recognizable proof of third party insurance, for example in the case of an accident, when traveling abroad.

比如发生了事故或在国外旅游，绿卡可以做为第三方保险的证据，很容易识别。

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Analysing the accident examples in this paper shows that earth connection is necessary and some earthed methods exist limitations for fire-proof and explosion-proof.

本文通过对事故实例的分析，指出接地的必要性和几种接地方式在防火、防爆方面的局限性。

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