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参考下,怎么只有你们两人在......
Diameter of rear wheel :Rear tyre size:80/90-17
(后轮的直径) =(90% x 80mm x 2)+17"
=0.144m + 0.432m
=0.576m
Circumference of rear wheel= 3.142 x Diameter of rear wheel
后轮的周长 = 3.142 x 0.576m
=1.809 m
Speed in meter per minute=RPM OF REAR WHEEL X cirumference of rear wheel
(轮胎每分钟的转速)= 后轮转速 x 后轮的周长
= 1182.197 x 1.809m
= 2138.59 m/min
(轮胎每小时的转速)= 2138.59m x 60min
= 128315.4m/h
所以公里 =128315.4m /1000
=128.31 km/h 本帖最后由 ogk 于 6-12-2013 11:30 PM 编辑