The survey of natural radionuclide contents in soil in China(1983—1990)is a part of investigation of environmental natural radioactivity level on China.
中国土壤中天然放射性核素含量调查（1983—1990年）是中国环境天然放射性水平调查研究的一部分。
Natural radioactivity in the marble is equal to the environmental level, radioactivity in the granite is much higher than that in marble.
大理石的天然放射性属于环境本底水平，花岗岩中放射性远远高于大理石产品。
Information on nation wide survey activities during 1970-1980 years on natural environmental radioactivity level in China and the related tritium data are given.
给出了70～80年代全国性的几次环境放射性水平调查的资料以及有关环境氚的数据。
Information on nation wide survey activities during 1970-1980 years on natural environmental radioactivity level in China and the related tritium data are given.
给出了70～80年代全国性的几次环境放射性水平调查的资料以及有关环境氚的数据。
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