与之相反，新的研究包括全部范围的污染物，包括二氧化硫，氮氧化物和水蒸汽。
Instead, the new study included a full range of pollutants, including sulfur dioxide, nitrogen oxide and water vapor.
现在主要污染物的范围包括二氧化硫和化学需氧量，为一个衡量水污染程度的指标。
The current scope of major pollutants includes sulfur dioxide and chemical oxygen demand, a gauge of water pollution.
研究内容包括二氧化硫对啤酒风味稳定性的影响、适量高产二氧化硫啤酒酵母的选育、啤酒发酵试验和突变菌株遗传物质分析。
The main research contents included the influence of SO_2 on the flavor stability of beer, the breeding of strain moderately producing SO_2, beer fermentation and genetic substance analysis of mutant.
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