The numerical computations have been made using difference method for difference characteristics and boundary conditions. The computation results show the state features of radon field in space.

针对模型的特点及其边界条件用差分法分别进行了数值计算，结果表明陷落柱氡气场的空间形态分布特征。

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The authors also studied the continuous self-recording technique by using the ionization method to measure the Radon gas.

并对应用电离法测量逸出气氡的连续自记观测技术进行了预研究试验。

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Objective to explore relevant factors about the soil radon measurement and provide gist of formulating correct measure method by studying the way of the soil radon measurement.

目的探讨土壤氡的测定方法，试图找出影响土壤氡测定结果准确性相关因素，为制定有效的测定方法提供依据。

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