然后以此来研究起火楼层、备用出口的位置和个数、人的反应时间一致性等因素对总的疏散时间的影响。

In this model, we should find the hithermost emergency exit to simulate the population evacuation and keep the number of people at every period of time and the total time recorded at the same time.

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事实上，Helmholtz发现人对于脚趾部位电击的反应时间比在脊柱部位要长，因为通往大脑的路途长一些。

In fact, Helmholtz discovered it took longer for people to respond to a shock in the toe than to one at the base of the spine because the path to the brain was longer.

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