环境放射性 environmental radioactivity ; environmental activity
环境放射性核素移动 movement of environmental radioactive nuclide
人为环境放射活性 man-created environ-mental activity
环境放射化学 environment radiochemistry
环境放射性监测 environmental radioactive monitoring
环境放射性危害 How Far the Radioactivity Harm from us
放射环境化学 [核] radioenvironmental chemistry
这些剂量可用以比较20年中人们通常接受的自然环境放射的平均剂量。
These can be compared with the average doses people normally receive from natural background over 20 years.
环境放射化学是一门新兴的边缘学科，对其学科体系进行探讨十分必要。
The environmental radiochemistry is a new frontier discipline. So? It is very important to study the system of this subject.
对环境放射化学的定义作了论述，并按不同方法对这门学科的研究内容作了分类和阐述；
The definition of the environmental radiochemistry has been studied. Main contents containing in the subject have been classified and reviewed in accordance with different modalities.
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