high background radiation area 高本底辐射地区 ; 放射性高本底地区 ; 底地区 ; 地区
high background radiation 高本底辐射
However, for a limited number of people living in known high background radiation areas of the world, doses can exceed 20 mSv per year.
然而对于数量不多的生活在全球已知高辐射环境地区的人们来说，每年的剂量可超过20 mSv。
Radiation is harmful to living things, yet the long-term effects of persistently high levels of background radiation on ecosystems are poorly understood.
核辐射对生物有害，而长时间高水平的本底辐射对生态系统有何影响，人们还知之甚少。
Objective To estimate the excess relative risk for solid cancer associated with chronically exposure to high-background natural radiation in Yangjiang area of China.
目的估算阳江高本底辐射慢性照射可能导致的实体癌超额相对危险。
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