Using clustering analysis method on the classification of Chinas urban air quality levels, gather into the city air quality in most similar category, analysis of causes, concluded.

运用聚类分析方法对我国城市空气质量等级进行分类，把空气质量状况最相似的城市聚成一类，分析原因、得出结论。

youdao

Using clustering analysis method on the classification of China's urban air quality levels, gather into the city air quality in most similar category, analysis of causes, concluded.

运用聚类分析方法对我国城市空气质量等级进行分类，把空气质量状况最相似的城市聚成一类，分析原因、得出结论。

youdao

Using clustering analysis method on the classification of China's urban air quality levels, gather into the city air quality in most similar category, analysis of causes, concluded.

运用聚类分析方法对我国城市空气质量等级进行分类，把空气质量状况最相似的城市聚成一类，分析原因、得出结论。

youdao