在坡度较大时，阻力系数随雷诺数的增大而增大。
That is, the roughness coefficient decreased with the increase of Reynolds on steep slope.
坡度对于阻力系数影响较小，且阻力系数在小于0.5时对于泥沙流失和溴离子流失影响较大。
The slope had less effect on resistance coefficient. There was more effect on the soil erosion and Br - when resistance coefficient is less than 0.5.
可基于车辆加速度、车辆驱动力和阻力系数 来估算坡度。
The grade may be estimated based on a vehicle acceleration rate, a vehicle driving force, and resistance factors.
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