4.3 侦测器旅行时间估计分析 车辆侦测器所侦测的速率为时间平均速率(Time Mean Speed),然而时间 平均速率会大于或等于实际的行时速率-空间平均速率(Space Mean Speed), 因此使用车辆侦测器所估算的路段旅行时间将会...
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截止到2008年以前的五年时间,拉美地区经济以年平均5.5%的速率增长,而通胀率保持单位数字。
In the five years to 2008 the region's economies grew at an annual average rate of 5.5%, while inflation was in single digits.
平均速率的定义是,移动距离除以移动这段距离时,所需要的时间。
The average speed is defined as the distance traveled divided by the time that it takes to travel that distance.
实验表明该方法不但能提高系统的总体性能,而且可以减少元组的平均等待时间,大大提高了元组的输出速率。
Some experiments prove that the approach can not only improve the system's performance, but also decrease the average latency time of tuples and improve the output rate of tuples greatly.
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