汽车滚动阻力系数f值的大小，标志着汽车行驶中滚动阻力的大小。基于试车道路滑行试验数据，采用滑行试验法计算汽车的滚动阻力系数。分析过程通过matlab编程实现。(the size of Car rolling resistance coefficient f value marks the size of the car driving rolling resistance. Based on the test data of the car road gliding, the rolling r