pollutant diffusion 中文意思是什麼
pollutant diffusion
解釋
污染物擴散-
Then a one - dimensional unsteady incompressible flow with moving pollutant source model was proposed. the continuity equation, momentum equation and convection - diffusion equation were discredited using finite volume scheme. thus a software for predicting the air velocity and pollutant in railway double track tunnels was developed
接著，根據雙線鐵路隧道運營通風的特點，建立了一維不可壓縮非恆定流和流動污染源的物理模型以及山相應的連續性方程、動量方程和對流擴散方程構成的數學模型；在此基礎上，利用數值計算方法，編制了一套雙線鐵路隧道運營通風的數值計算程序。 -
Using emended gauss diffusion mode, taking wind erosion modulus as the ground oil pollutant sources, dust and oil pollutant quantity in air and polluting load in water were calculated, a relative model was founded
本文以土壤侵蝕的風洞實驗求得污染源源強，採用高斯模式對地表風蝕作用的傳輸量進行估算，進而對石油開發區落油通過大氣傳輸途徑對區域水環境（博斯騰湖）的影響進行了預測，建立了相應的模型。 -
( 5 ) discuss some mathematical models of the pollutant transport problems in some local river flow fields. by integral transform method, the paper establishes the usual finite difference approximation scheme to solve the numerical solutions and gives examples for the computation of the approximating solutions, moreover, discusses one - dimensional characteristic finite difference method for a convection - diffusion equation under usual conditions
（ 5 ）針對水域中污染物輸移問題的數學模型，通過積分變換法，得到了簡化模型在理想化條件下的近似精確解，同時給出數值算例，並且對非理想化條件下模型的特徵差分方法進行了討論。 -
The unsteady. flow theory is used for calculate air flow velocity and one - dimension unsteady convection - diffusion model is used for calculate pollutant concentration ( called unsteady theory model in general, utm ), and a new tunnel control method based on utm and neural network model is developed
本文首次採用更符合實際情況的隧道氣流?維非恆定流理論和污染物濃度?維非恆定對流擴散模型（統稱非恆定流理論模型）進行隧道通風控制方法的研究，並提出了一套基於非恆定流理論和神經網路模型的新的隧道通風控制方法。 -
The paper, by using the technology of gis and the method of systems engineering, analyzed the development situation of regional society and economy, the natural physical conditions, the situation of pollutant, and density distributing characteristics of pollutant, then set up the echoing relationship between pollute source diffusion and quality of air environment, which could make controlling index of pollution source discharging be closely linked with the quality of environment
本研究採用gis技術，利用系統工程的方法根據區域社會經濟發展狀況、自然地理條件、污染源狀況及污染物濃度分佈特徵進行綜合分析研究，研究建立了污染源擴散與大氣環境質量的響應關系，將污染源排放控制指標與區域的環境質量直接掛鉤。 -
The paper discussed systematically basic concepts, principles and methods of total quantity controlling of atmospheric pollutant, put forward the main technological route and methods of investigating air pollute source, analyzed the situation of region studied air pollution source and its changing tendency, which could provide scientific substratum for setting up the echoing relationship between pollute source diffusion and quality of air environment, which could provide strong theoretical basis for studying total quantity controlling of air pollutant
論文系統地分析研究了大氣污染物總量控制的基本概念、原理、方法、主要技術路線和區域大氣污染源調查實驗方法及研究區域大氣污染源現狀及發展變化趨勢，為建立污染源與環境質量的響應關系提供科學依據，為研究大氣總量控制提供堅實的理論基礎。
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