Due to the slow concern over a longer period is within the range, average speed will slow space speed heavier. So space average speed will be lower than the average rate of the time.
Because the slow car is in the range of interest for a long time, the average space speed makes the slow car more severe. So the average velocity of space is lower than the average time speed.
Because the idle is in the range of attention in a long period of time, the spatial average speed will make the idle speed heavier. Therefore, the spatial average speed will be lower than the time average speed.<br>