Objective To research and assess radon concentration and radioactivity level of part coal mine in Guizhou province.
目的研究和评价贵州省地下煤矿氡气浓度和放射性水平。
The results show that the radioactivity level of varied water bod-ies of the city was within normal natural background.
调查结果表明，上海市各类水体中天然放射性核素浓度属正常本底水平。
The results show that the radioactivity level of varied water bodies of the region was within normal natural background.
调查结果表明，宁夏回族自治区水体中天然放射性核素浓度属正常本底水平。
This paper reports the investigation results of natural radioactivity level in river, lake, reservoir, spring, well and tap water in Beijing City.
本文报道了北京市河流、湖泊、水库、温泉、井和自来水中天然放射性核素浓度的调查方法及主要结果。
This paper reports the investigation results of natural radioactivity level in river, lake, reservoir, spring, well and tap water in Hubei Province.
本文报道了湖北省江河、湖泊、水库、温泉、农村井水和城市自来水中天然放射性核素浓度的调查结果。
This paper reports the investigation results of natural radioactivity level in river, lake, reservoir, spring, well and tap water in Qirighai Province.
本文报道了青海省江河、湖泊、水库、泉、井和自来水中天然放射性核素浓度的调查结果。
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。
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。
This paper reports the investigation results of natural radioactivity level in river, lake, reservoir, spring, well, offshore water and tap water in Yunnan Province.
本文报道了云南省江河、湖泊、水库、泉(温泉)、井和自来水中天然放射性核素浓度的调查结果。
This paper reports the investigation results of natural radioactivity level in river, lake, reservoir, spring, well, offshore water and tap water in Yunnan Province.
本文报道了云南省江河、湖泊、水库、泉(温泉)、井和自来水中天然放射性核素浓度的调查结果。
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