Factor analysis was used for the data set of chemical components concentration of precipitation collected in Chengdu urban area.
本文对成都市区降水化学组分进行了因子分析。
Located in Chengdu Plains, southwest China, Chengdu covers a land size of 12390 square kilometers with an urban area of 283.86 square kilometers and total population of 10.82 million.
成都位于中国西南，地处成都平原，城市面积12390平方公里，中心城区面积283.86平方公里，总人口1082万。
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