为了研究行人碰撞事故中人体下肢的生物力学响应和损伤机理，建立了一个人体下肢有限元模型。
In this paper, the failure mechanism and control technology of fretting fatigue have been studied by means of fatigue testing and finite element analysis.
在它狭窄弯曲的小巷里(其实是早年铁路线的遗迹)，电动推车和行人屡屡发生碰撞事件，几乎每天都需要叫救护车。
There are frequent collisions between motorised carts and pedestrians in its narrow, curving alleyways, the vestige of a former railway line; an ambulance needs to be called almost every day.
为了了解中国城市交通中车辆碰撞行人事故的形态，在中国长沙地区开展了深入的调查。
To understand the scenarios of vehicle accidents involving pedestrians in Chinese urban traffic, an in-depth accident investigation was conducted in Changsha, China.
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