TOTAL OZONE DEMAND 总臭氧需要量
Usually, the ozone demand varies significantly throughout the cooling season.
通常,新鲜的空气要求在冷却的季节各处重要的改变。
This is because the city water treatment process has already removed the bacteria present in river or gray water, which reduces the ozone demand.
因为城市水治疗程序有在河中已经移动细菌出现或者使水变灰色,所以这是,减少新鲜的空气要求。
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