The results show that during storm period, non - point pollution concentration and momentary toss are co - occurence with the peak value of runoff, their relations are very closely.
研究结果表明:暴雨期内,非点源污染物浓度及瞬时流失量与径流峰值几乎同步出现,它们之间存在着非常密切的关系。
Hydrogen can replace acetylene, gas, liquefied petroleum gases such as carbon, with high calorific value, flame concentration, zero pollution, high efficiency, energy saving and easy.
氢气可以取代乙炔、煤气、液化气等含碳气体,具有热值高、火焰集中、零污染,生产效率高,节能方便等优点。
The observational results indicated that NO2 pollution level increased year by year, the O3 mass concentration increased and maximum value appeared ahead in the year of 2006.
结果表明:南京市环境空气NO2污染逐年增加,2006年O3质量浓度增大并且最大值的出现时间提前。
The observational results indicated that NO2 pollution level increased year by year, the O3 mass concentration increased and maximum value appeared ahead in the year of 2006.
结果表明:南京市环境空气NO2污染逐年增加,2006年O3质量浓度增大并且最大值的出现时间提前。
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