普通平板车导轨长度为80m,轨距1.435m,两轨之间无绝缘。为改作为电动车导轨,我们作如下改进。 原两导轨仍为电动平板车的导轨(见图示)。其中一根作为滑触线(原导轨接缝处必须焊牢)。再在 Ordinary flat car guide rail length of 80m, gauge 1.435m, no insulation between the two tracks. To change to electric car rails, we make the following improvements. The original two rails are still rails for electric flatbed (see illustration). One as a trolley line (the original rail joints must be welded firmly). Then again