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.
而車輪與軌道間的作用力是評價車輛運行品質的重要因素，能否準確及時地獲取輪軌間的作用力直接影響著車輛脫軌系數等的計算。