在研究局部地区空气污染时，目前国内外应用较为广泛的仍是假设烟羽浓度为正态分布的高斯模式。
Gaussian model with the assumption of the normal distribution of plume concentration is mostly applied for the evaluation of local atmospheric pollution in the world.
济南市地下水污染以浅层地下水污染为主，局部地区深层地下水也已受到污染，并有进一步加重的趋势。
Groundwater pollution in Jinan City is mainly at shadow layer, and certain local areas of deep layer has already polluted, and with a worse tendency.
局部地区呈现出污染加重的趋势。
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