迳流和潮差是影响污水稀释扩散效果的主要因素。
Runoff and tidal range are the main factors influencing the effects of dilution and dispersion.
污染物在大气中被稀释扩散时，还会发生干沉积、湿沉积和化学转化过程，所有这些都会影响污染物在大气中的分布。
Air diffusion can impact the pollutant distribution in atmosphere, and so do some non-diffusion aspects such as dry sediment, wet sediment and chemical translation.
水污染物的总量控制是建立在天然水体对污染物具有稀释扩散和自净作用理论上，即天然水体对污染物具有一定环境容量的基础上。
Total emission control of water pollutants is based on natural water dilution of pollutants and autopurification theory, in another word, natural water has some environmental capacity on pollutants.
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