综述了大气污染物区域环境容量的主要影响因素、用于其计算的空气质量模型以及大气环境容量的研究步骤。
The main affection factors, the atmospheric quality models and the usual computing proceed of the atmospheric pollutant environment capacity of the area were summarized.
最后利用美国加利福尼亚交通部开发的线源空气质量模型CALINE4模式对典型道路污染物的扩散状况进行了模拟。
The dispersion situation along typical roads was simulated using the line source dispersion model-CALINE4, developed by California traffic department and recommended by USEPA.
在此基础上，应建立未确知空气质量模拟模型。
On this basis, an unascertained model of air quality simulation is established.
针对这些问题提出了城市空气质量的回归诊断预报模型。
Thus the regression diagnosis prediction model for city air quality forecasting is proposed.
比较研究了空气质量统计预报模型和数值预报模式的优缺点。
Finally, a comparative study is carried out on the advantages and disadvantages of statistical prediction model of air quality and the numerical forecast model.
结果证明，ANN模型用于区域环境空气质量评价，其评价结果比较直观。
The results showed that the ANN model could obtain a directly - quantitative results in the comprehensive assessment of city regional ambient air quality.
城市空气质量回归预报模型的残差分布存在着不对称现象，它是由高杠杆点引起。
There exists asymmetry characteristic of residual distribution in the regression model of city air quality forecast. It is caused by some high leverage cases.
热膜式空气质量流量传感器存在动态非线性问题，必须建立动态非线性模型。
The non-linear dynamic model of the hot film MAF sensor must be built because the sensor possesses the nonlinear dynamic characteristics.
经过修正聚类模型计算，确定2004年杭州市环境空气综合质量等级为二级，已达到该地区规定的环境空气质量标准。
By using the modified model, comprehensive grade of Hangzhou atmospheric quality in 2004 is grade II, which attains this city's atmospheric quality standard.
本文采用C4.5决策树算法构建空气质量评价系统，挖掘空气污染物和空气等级关系的历史数据，建立空气污染物-空气等级智能评价模型。
Intelligent evaluation model for air quality based on C4.5 decision tree algorithm is established through the historical data of air pollutants and air quality classes in this article.
建模结果表明，动态非线性模型比线性模型更为准确地描述了热膜(线)式空气质量流量传感器的动态特性。
The modeling results show that the nonlinear dynamic models are more accurate than the linear dynamic models to describe the sensor characteristics.
本文空气质量模式选用单箱模型和多源模式联合预测。
Then we predict the air pollutants on the basis of 2002 burning-coal quality.
利用灰色统计模型分析了各城市空气质量等级，用上海大气质量指数法计算出污染负担率，然后根据污染负担率判断城市空气污染类型。
Air quality levels are analyzed in each city use of gray statistical strategy. The type of urban air pollution is judged by burden rate, which is calculated by the Shanghai air quality index.
利用灰色统计模型分析了各城市空气质量等级，用上海大气质量指数法计算出污染负担率，然后根据污染负担率判断城市空气污染类型。
Air quality levels are analyzed in each city use of gray statistical strategy. The type of urban air pollution is judged by burden rate, which is calculated by the Shanghai air quality index.
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