A new definition of speed dispersion ASD (average speed difference) is proposed based on car-following theory.
基于车辆跟驰理论提出了能够反映交通流动态特性的车速离散度平均速差(asd)的定义。
If the P90 wind-speed is within 12-15% of the average, banks are usually happy to stump up. But a difference of 20% or higher renders a wind farm “unfinanceable”, says Mr Murley.
如果p90的风速在平均值的12-15%范围内，银行通常会很高兴提供贷款，但是20%的差距，或者更高，就会给风力厂开出“不能提供贷款”，穆勒先生说。
Result from different city show that vehicle driving condition belong to different city is diverse, and average speed and idle rate are not uniform, but their difference is small;
不同城市的数据解析结果表明：不同城市车辆行驶状况存在一定的差异，其平均速度、怠速比例等均有所不同，但差异不大；
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