A model was developed to estimate the traffic pollutant concentrations along roadside in one step with artificial neural network technique.

利用人工神经网络技术设计了一段式计算路侧道路交通污染物浓度的模型。

youdao

Since a chief source of pollutants is automobile emissions, it might be expected that pollutant levels could be correlated with automobile traffic, at least to some extent.

因为污染物的主要来源是汽车的排出物，所以可以料想污染物的浓度至少在某种程度上是与汽车运输有关。

youdao

Urban traffic is a dynamic system, whose pollutant emission always changes.

城市交通是一个动态系统，污染物排放量始终处于变化之中。

youdao

The launch of DriveNow and ParkNow in San Francisco and other cities is part of our commitment to the development of new mobility offerings, which will reduce the level of pollutant emissions and traffic congestion and improve quality of life for residents.

ENGADGET: BMW DriveNow EV car sharing comes to San Francisco Bay Area, ParkNow follows suit