The air survey is specially superior in the regional environmental radioactivitysurvey, 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
The harmful effects of radioactive radiation on human health are analyzed, and the necessity of large-area airborne radioactivitysurvey is...
最后分析了放射性照射对人体健康的影响，指出了今后开展大面积航空放射性检测的必要性。
3
The survey of natural radionuclide contents in soil in China(1983—1990)is a part of investigation of environmental natural radioactivity level on China.