digression coefficient

Weather or not acquiring the force between the wheel and rail with accuracy and in time directly influences the calculation of the digression coefficient because of the important of the force in estimating the train running condition.
而车轮与轨道间的作用力是评价车辆运行品质的重要因素，能否准确及时地获取轮轨间的作用力直接影响着车辆脱轨系数等的计算。