The rolling motion resistance of running automobile are expounded, and a method for testing the rolling motion resistance of running automobile is introduced in this paper.
论述汽车行驶工况的滚动阻力，介绍一种测试汽车滚动阻力的方法。
This is so because the resistance to motion is essentially due to the deformation of the rolling elements and, hence, is not a sliding phenomenon.
之所以这样是因为对运动的阻力基本上源于滚动零件的变形，而不是滑动现象。
The size and number of steel wheel lug's holes, formed within the same distance, reflect directly its motion resistance when rolling in paddy field.
水田铁轮在水田中滚动时，在相同区段上所形成的刺孔的大小与多少直接影响共滚动阻力的大小。
Because ship rolling is the heaviest motion of a ship in waves, it is important to study ship rolling modeling and prediction in order to improve ship's seaworthiness and wave-resistance.
船舶横摇运动是对船舶航行影响最大的运动，研究船舶横摇运动的建模与预报对于提高船舶适航性、耐波性有重要意义。
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。
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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