基本解释：风向转变
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Moreover,the influence of wind direction,wind speed,weather,seasons and the breakdown in production on the living area′s ordor pollution is discussed.对炼油厂生活区恶臭问题进行了统计分析,探寻风向、风速、天气、季节和生产故障等因素对生活区恶臭的影响的规律,认为生活区恶臭与炼油厂有一定的关系,在北风或偏北风、风速为1~4。
PM 10 samples from eight wind directions were collected with ACCU(Automatic Cartridge Collection Unit)method for 3 months on one monitoring site in Wusong industry area of Shanghai,and PM 10 concentrations were measured in samples and 18 inorganic elements concentrations were measured by PIXE(proton-induced X-ray emission) method.[方法 ]在上海市吴淞工业区选择一个监测点 ,使用自动滤式颗粒物收集仪 (automaticcartridgecollectionunit,ACCU)系统进行为期 3个月、8个不同风向的PM10 采样。
CFD numerical simulation coupling with the wind direction frequency weighted(WDFW) method was carried out based on the conditions that were measured.运用风向频率加权(WDFW)方法,结合大气流动和污染物扩散的CFD模型进行数值模拟计算。
The relationship between surface wind direction and air pollutant concentration in Shanghai is studied.利用 2 0 0 0年 6月至 2 0 0 2年 1 2月上海地区空气污染物浓度和地面风向资料 ,统计了月平均污染物浓度随偏西风频率的分布 ,两者具有一致的趋势。
The wind direction decision and the uniqueness of the result in the triangle network;△形网路的风向判别与解的唯一性
