On this basis, the relationship between the respiratory health of children and their parents and the air pollution degree is analyzed.
在此基础上，分析了空气污染程度与儿童及其父母呼吸系统健康的关系。
Air pollution cluster analysis, at 8 sites in 4 cities of China are conducted based on pollution data; put in order to the air pollution degree.
根据空气污染数据对广州、武汉、兰州、重庆4城市8个点位进行了空气污染的聚类分析，并按空气污染程度进行了排序。
This will lessen the degree of air pollution.
这可以减轻空气污染的程度。
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