Furthermore, it is expounded that reducing the coefficient of rolling resistance is one of the important methods to improve fuel economic character of the automobile.

并揭示了降低滚动阻力系数也是提高汽车燃油经济性的重要措施之一。

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A new rolling resistance (coefficient) test system is developed based on wheel torque sensor, which offers a new method for deeply researching the rolling resistance of the wheels on the rollers.

开发了基于车轮力传感器的底盘测功机上轮胎滚动阻力(系数)的测试系统，为深入研究轮胎在滚筒上的滚动阻力提供了新方法。

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The model of laminar flow in tubes in rolling motion is established. The dimensionless correlation of velocity is derived, and the correlation of frictional resistance coefficient is also obtained.

建立了摇摆条件下圆管内的层流流动模型，推导出无量纲化的速度表达式，得到摩擦阻力系数关系式。

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