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在瑞士有一种使用三条铁轨的电气火车。这种火车使用在洛桑市东郊约60公里处的一个游览胜地,专门用于登山。该火车的车厢外形与一般火车车厢差不多,但较小。有3条铁轨,在两条铁轨当中,还有1根稍高一点的齿状铁轨。这根齿状铁轨同车厢底部的传动齿轮相咬合。当火车上下陡坡时,传动齿轮通过铁轨上的“铁齿”的咬合,既能增强爬坡能力,又能阻止车辆下滑,保证运行安全。火车一起动,传动齿轮就在齿状铁轨上发出一种轻快的
There is an electric train in Switzerland that uses three rails. The train uses a tourist attraction about 60 kilometers east of Lausanne, devoted to mountaineering. The train’s cabin shape and the general train compartment, but smaller. There are 3 tracks, of which, there is a slightly higher toothed track. This toothed rail with the bottom of the drive gear meshing. When the train steep up and down, the transmission gear through the rail on the “iron teeth” of the bite, both to enhance the ability to climb, but also to prevent the vehicle glides, to ensure operational safety. When the train is started, the transmission gear sends a brisk light on the toothed rails