N a radioisotope of radon that is a decay product of thorium. Symbol: Tn or 220Rn; atomic no: 86; half-life: 54.5s 钍射气
It was successfully used to automatically determine the concentrations of radon and thoron daughters in air.
用它测定空气中气氡(气土)子体浓度获得良好结果。
The indoor thoron concentration in some areas and some kind of houses is higher, the study in this field should be strengthened.
我国有些地区和某些类型住房中钍射气浓度较高，有必要加强这一问题的研究。
Apart from the lower uranium concentration in kidney and higher thoron concentration in lung, the related other values are roughly similar with those reported abroad.
与国外相比，除了肾铀浓度明显偏低和肺钍浓度偏高外，其他数值基本相当。
应用推荐