It is proved that the fundamental diagram of the average traffic flow speed as the function of the car density for the new model is exactly the same as for fi model.

证明新模型的基本图，即车流渐近稳态的平均速度与道路上的车辆密度之间的函数关系与FI模型的完全相同。

youdao

It also gives a construction approach for approximating the probability density function of activity duration, which will facilitate the computer simulation of the PERT diagram.

本文还给出了一种简练的函数构造法，用该方法构造的函数能较好地逼近活动工期概率密度函数，方便了对计划网络图的计算机仿真运算。

youdao

So, one way we could look at it is by looking at this density dot diagram, where the density of the dots correlates to the probability density.

其中一个理解它的方法，就是通过看这个密度点图，这里点的密度，和概率密度想关联的。

youdao

So, one way we could look at it is by looking at this density dot diagram, where the density of the dots correlates to the probability density.

其中一个理解它的方法,就是通过看这个密度点图，这里点的密度,和概率密度想关联的。

麻省理工公开课 - 化学原理课程节选