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- Natural radioactivity contains a store of valuable information. 天然放射性包含着许多有价值的信息。
- 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。
- This paper reports the investigation results of natural radioactivity level in river,lade,reservoir,well and tap water in Shanghai. 本文报道了上海市江河、湖泊、水库、近海海域、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 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。
- This paper reports the investigation res ults of natural radioactivity level in river,reservoir,offshore ,spring ,well and tapwater in Fujian Province. 本文报道了福建省江河、水库、近海海域、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 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。
- 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 Gansu Province. 本文报道了甘肃省江河、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。
- 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 Inner Mongolia Autonomous Region. 本文报道了内蒙古自治区江河、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。
- This paper reports the investigation results of natural radioactivity level in riv-er,lake,reservoir,spring,tap water and offshore water in Guangdong Province(includeHainan province). 本文报道了广东省（含海南省）江河、湖泊、水库、温泉、自来水和近海海域海水中天然放射性核素浓度的调查结果。
- Radiometric sorting is a separation method in which the natural radioactivity of ores and their different reaction after being radiated are used for separating useful minerals and waste rocks. 辐射分选是利用含有用元素的矿块和废石块在受照射后反应的差别或其本身放射性的差别而将矿石与废石分开的一种分选方法。
- Building materials results from it is inevitable that the soil in nature, rock contains certain natural radioactivity material among them, also be insufficient for what blame. 建材源于自然界中的土壤、岩石其中含有一定的天然放射性物质是必然的，也是不足为怪的。
- natural radioactivity background 天然放射性本底
- Polonium is a naturally radioactive metallic element. 钋是一种具有天然辐射性的金属元素。
- Natural Radioactivity Level in Bone-coal Mines in Zhejiang Province 浙江省放射性伴生石煤矿区天然放射性水平调查
- Artificial Activities and Natural Radioactivity in the Environment 人为活动与环境中的天然放射性
- Determination of Natural Radioactivity in Environmental Samples 环境样品中天然放射性含量的测定
- Keywords Water;Natural Radioactivity;Investigation;Tianjing; 水体;天然放射性核素;浓度;调查;天津;
- It is natural for a cat to catch mice. 猫捉老鼠是本能。
