The slower vibration of the last tuning fork, is a perfect image of the vibration of the higher tuning fork, but the rate of its vibration per unit of time has been slowed down.

• 最后音叉的较低的振动是更高级音叉振动的一幅完美的图像，只是它的每个时间单元的振动速率已经减缓下来。