In one month, dust fall can reach as much as 17kg per square kilometre.
在一个月的时间里，每平方公里差不多要落下17kg的灰尘。
The mineral composition and morphology of atmospheric dust fall serve as important criteria in identifying pollution sources.
大气降尘矿物成分和形貌特征是判别污染物来源的重要标志。
The geography information system (GIS) technology was applied to deal with the pollution state of atmospheric dust fall in Jiaozuo City of Henan Province.
应用地理信息系统(GIS)技术分析了焦作市城区大气降尘污染状况。
The geography information system (GIS) technology was applied to deal with the pollution state of atmospheric dust fall in Jiaozuo City of Henan Province.
应用地理信息系统(GIS)技术分析了焦作市城区大气降尘污染状况。
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