Question

急急急，帮忙翻译一下

自从中国铁路第一次提速至今，全国铁路旅客列车行驶时速已由140 km／h提至300 km／h以上，前不久380km/h的高速列车也已经下线。随着列车速度的不断提高，乘客对乘坐列车的舒适性和安全性也越来越关注。与乘客联系最为密切的座椅理所当然地成为列车配套设备研发的重点。为了保证座椅的安全性，需要对座椅进行安全试验。在进行试验之前，利用有限元法对座椅进行仿真分析，可以有效地缩短座椅的研发周期，降低研发成本。
本文分析的主体是地铁铝合金双人座椅，通过对双人座椅的几何模型进行简化，得到了座椅结构的有限元模型。模拟座椅在列车运行状态下的四种工况，对有限元模型进行相应的加载，得到座椅有限元模型的应力分布情况。最后对受力较大的螺栓进行了强度计算校核。

Answer 1

Since China's first railway, the speed railway passenger trains speed by 140 km/h to 300 km/h, recently 380km/h of high-speed train has also. Along with the unceasing enhancement, train speed of train passengers ride comfort and safety pay more and more attention. Passengers is most closely connected with the seats for the key focus of our current r&d facilities train. In order to guarantee the safety of seat, the need to conduct safety seat experiment. In experiments, by using finite element method for before the seat on the simulation analysis, can effectively shorten the development cycle, reduce seat r&d costs.
In this paper are the subject of subway seats, based on aluminum seats of geometric model, simplified seat structure finite element model. Simulation on the train operation condition seat four conditions of finite element model and the corresponding loading, the finite element model of the seat stress distributions. Finally the larger force bolt strength calculation