Exercised by 'present wheel revolutions = the diameter of the wheel (certain) so the exercise of the journey and wheel revolution into a direct ratio.
所行使的路程÷车轮转数=车轮的直径（一定）所以所行使的路程和车轮转数成正比例。
2
An exercise detection algorithm based on the ratio images was proposed.
提出了一种基于比率图像的运动检测算法。
3
Methods:It was employed that chrono- medical mimic- flight , treadmill- running and swimming to research the influence of chrono- exercise upon DA and 5- HT's ratio in rats'telencephalon.