大气污染长期扩散模型（ISCLT3）是高斯 模型的一种，是美国环境保护署强制推荐的大气污染扩散 模型，并称为法规 模型；
Long-term diffusion model of atmospheric pollutant (ISCLT3) called regulatory model is a kind of Gaussian model recommended by U. S. Environmental Protection Agency.
将地理信息系统应用于城市突发性的大气污染事故，对大气扩散模型的图形技术进行开发研究。
GIS is applied to air pollution emergency in urban areas. The figured technology of atmosphere diffusion model is studied.
这里利用成熟的室外大气污染物扩散理论- 梯度输送理论和箱模式理论，提出焊接烟尘在室内的扩散模式和浓度分布的理论计算方法。
In this paper, the diffusion model and the theoretic calculation method of welding dust are given by gradient transportation theory and box model for outdoor atmospheric pollutants.
方法用多源扩散数学模型计算健康调查区域内的大气污染物历史暴露浓度。
Methods The air pollutant exposure concentration in history were calculated with the multi - source proliferation mathematical model.
结论利用多源扩散数学模型是研究健康调查区域内大气污染物历史暴露浓度的一种可行方法。
Conclusion It is an effective method to use multi - source proliferation mathematical model for studying the pollutants exposure concentration in atmosphere of the health survey region in history.
分析了大气边界层扩散条件、大气污染源分布及预测、大气污染现状。
The paper analyses the diffusion conditions of air boundary layers, the distribution and forecast of source air pollution and the current situation of air pollution.
本文分析了影响大气污染物扩散的各种因素，讨论了主要因素对大气污染物扩散的影响趋势。
The various affecting atmospheric pollutants diffusion is analyzed and the effect tendency of primary factor to atmospheric pollutants diffusion is discussed.
工程上应用的大气污染物扩散模式中，熏烟模式由于其非定常性而与其他扩散模式有很大的区别。
The atmospheric pollutant dispersion models applied to engineering greatly differs from other dispersion models due to their unsteady flows.
以煤为主的能源结构和不利于污染物扩散的自然环境是兰州市区大气污染严重的主要原因。
Coal is the most important part of energy structure and the natural surroundings in poor dispersion of pollutants in the air are the main reasons for serious pollution in Lanzhou urban.
以煤为主的能源结构和不利于污染物扩散的自然环境是兰州市区大气污染严重的主要原因。
Coal is the most important part of energy structure and the natural surroundings in poor dispersion of pollutants in the air are the main reasons for serious pollution in Lanzhou urban.
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