The comprehensive pollution harm index of the water quality can be calculated with the aid of the general weighted contrast for the pollution harm partial indices.

提出用对比 加权对污染损害分 指数进行赋权的新方法，计算水质 综合污染损害 指数。

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These agencies collect data from monitoring stations around the city and calculate an Air Pollution Index (API) indicating the potential harm to human health, with a range of 1-500.

这些机构从分布在城市中的监测站收集数据，计算出空气污染指数(Air Pollution Index, API)。该指数在1 - 500之间，数值越高就表明空气状况对人体健康的潜在危害程度越大。

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