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。

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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。

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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。

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