With regard to the flow around a sedan’s wheels, there are too many simplifications in the past studies. Thus, it is necessary to carry out studies about the external flow around a sedan in detail with the rotating wheels condition.
对于轿车车轮流场，先前的研究中常常进行了过多的简化，所以有必要开展比较详细的在车轮旋转影响下的轿车外流场研究。
参考来源 - 车轮旋转条件下轿车外流场的数值计算研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The coefficient of drag and coefficient of lift in the circumstance of rotating wheels is lower.
汽车在车轮旋转情况下，阻力系数和升力系数比车轮静止情况下的低。
Aluminum metering chamber, thread connection. Mechanical readout device with rotating wheels. subtotals an be set to zero, total readouts can not.
带手轮的机械流量表，升数可以手动回零，总累不能回零。
Well-run pendulum clocks in the 1660s differed by only about 15 seconds a day. Non-pendulum clocks of the same era (ones that used rotating wheels) varied by about 15 minutes a day.
在17世纪60年代，一台运行良好的摆钟一天的误差只有15秒，而同时期的非摆钟的钟表(即采用回转轮的钟表)运行一天则有15分钟的误差。
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