It is shown that the radium content is not completely relevant to radon exhalation rate from some building material.
结果表明，建筑材料中镭含量与氡析出率之间并不完全相关。
As the soil radon exhalation have an important impact on the indoor radon concentration, the research of soil radon exhalation is caused by a new hotspot.
土壤氡析出率的影响因素很多，其中大气压力是较为重要的影响因素之一。
We have further investigated the probables strong relationship between the indoor radon concentrations and the radon exhalation rate from building surface.
对室内氡浓度与建筑物表面氡析出率的关系进行了分析研究。
The only input factors of the simplified model were soil radium content, dry bulk density, water content and soil texture type and the output was soil radon exhalation rate.
模型只需输入土壤样品镭含量、容重、质量含水率和质地名称，就可以输出该样品的氡析出率理论值。
On the basis of distribution of radioactive elements and geological background, the theory equation of radon exhalation rate is derived from the decay rule of radioactive elements and gas diffusion.
根据放射性元素分布规律、地质背景及放射性元素衰变等，建立了计算氡析出率的理论公式。
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。
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。
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