The air survey is specially superior in the regional environmentalradioactivity survey, which is recommended by IAEA.
在区域环境放射性测量中,航测具有特殊的优势,是IAEA推荐的手段。
2
In order to assess the radiation doses caused by environmentalradioactivity, certain type of environmental assessment mode will be necessary.
要对释放到环境中的放射性所致辐照剂量进行评价,一定型式的环境评价模式是必不可少的。
3
Information on nation wide survey activities during 1970-1980 years on natural environmentalradioactivity level in China and the related tritium data are given.