能够输出电动汽车爬坡性能，直观地反映出电动汽车在爬坡时最好的动力区间，有利于优化传动系统的传动比以及各类动力性的分析。(It can output the performance of the electric vehicle climbing, and directly reflect the best dynamic range of the electric vehicle, which is helpful to optimize the transmission ratio of th