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1·Methods Based on soil radon diffusive theory, a model including the influences of soil radium content, emanation coefficient, soil porosity and moisture saturation on radon exhalation was established.

方法通过对氡在土壤中扩散理论的分析，建立土壤氡析出率数学模型，该模型考虑了土壤的镭含量、射气系数、孔隙度和含水饱和度等因素对氡析出率的影响。