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在苏联铁路上有很多大于10‰的连续坡道,货运列车在这种坡道上制动时,闸瓦产生很大的热负荷,温度很高,能损坏闸瓦的材质或车轮踏面。列车被闸瓦消耗的全部功率可按下式求得:
There are many continuous ramps on the Soviet railway that are larger than 10 ‰. When a freight train brakes on such a ramp, the brake shoe generates a large heat load and can overwhelm the brake shoe material or wheel tread. The total power consumed by the train brake shoe can be obtained as follows: