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7Be, as a tracer for atmosphere transmission, seasonal transfer of surface soils and for particulate mixing, has been applied widely. Its concentration distribution in different spaces is an investigative groundwork in many science fields. Based on the di
7Be, as a tracer for atmosphere transmission, seasonal transfer of surface soils and for particulate mixing, has been applied widely. Its concentration distribution in different spaces is an investigative groundwork in many science fields. Based on the di