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。
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。
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.
方法：采用时间医学模拟飞行实验方法，以跑台跑和游泳的运动负荷形式，探索择时运动对大鼠脑中枢DA/5-HT比值的影响。
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