This paper has proposed a method to estimate traffic density using the output(traffic flow and time mean speed) of fixed traffic detectors.

本文提出了一种利用定点检测器数据（流量和时间平均速度）来获取交通流密度的方法。

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But he thinks taking too much time will mean the end of the line for high-speed rail in California.

但Barker又觉得事情拖得太久的话，加利福尼亚州的高铁项目会不了了之。

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Feeding rate, the kiln incline degree and the kiln rolling speed are adjusted to study the changes of particles mean residence time (MRT), mean volume flow (MVF) and loading rate in the kiln.

通过改变给料率、回转窑倾角、回转窑转速来考察它们对物料在回转窑内的平均停留时间(MRT)、平均体积流率(MVF)、填充率的影响。

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