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1·The results show that there is a normal level of natural radioactivity of soil in the Xiazhuang granite uranium ore field.

评价结果表明，下庄铀矿田的土壤中天然放射性水平处于正常范围。

2·The methods of urban environment's natural radioactivity were investigated through abundances of experiments and field measurements.

通过大量的实验和野外测量，对城市环境天然放射性评价方法进行了研究。

3·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。

4·This paper reports the investigation results of natural radioactivity level in river, lake. spring, well and tap water in Jiangsu Province.

本文报道了江苏省江河、湖泊、泉、井、近海海域和自来水中天然放射性核素浓度的调查结果。

5·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。

6·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。

7·This paper reports the investigation results of natural radioactivity level in river, lake, reservoir, spring, well and tap water in Hebei Province.

本文报道了河北省河流、湖泊、水库、海水、泉水、农村井水以及城镇自来水中天然放射性核素浓度的调查结果。

8·Based on the natural radioactivity of potassium, the contents of potassium in solid potash fertilizer products were determined by radioactivity method.

基于钾的天然放射性，用放射性方法测定固体钾肥产品中的钾含量。

9·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。

10·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。