Looking at the frequency difference, they realized that the shaking speed was connected to the radiusof the animal's body.
通过观察身体动作频率的差别他们了解到，抖动的速率原来与动物身体的半径有关。
2
Curves generally are ground with asymmetric profiles that promote conformal contact in order to take advantage of the rolling radiusdifference and enhance steering.
In other words, if according to the proportion of production with a radiusof 30 cm of the globe, so its equatorial radius and the polar radius is only a differenceof 1 mm!