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- Natural radioactivity contains a store of valuable information. 天然放射性包含著許多有價值的信息。
- This paper reports the investigation results of natural radioactivity level in river,lake.spring,well and tap water in Jiangsu Province. 本文報道了江蘇省江河、湖泊、泉、井、近海海域和自來水中天然放射性核素濃度的調查結果。
- This paper reports the investigation results of natural radioactivity level in river,lade,reservoir,well and tap water in Shanghai. 本文報道了上海市江河、湖泊、水庫、近海海域、井和自來水中天然放射性核素濃度的調查結果。
- This paper reports the investigation results of natural radioactivity level in river,lake,reservoir,spring,well and tap water in Hebei Province. 本文報道了河北省河流、湖泊、水庫、海水、泉水、農村井水以及城鎮自來水中天然放射性核素濃度的調查結果。
- This paper reports the investigation res ults of natural radioactivity level in river,reservoir,offshore ,spring ,well and tapwater in Fujian Province. 本文報道了福建省江河、水庫、近海海域、泉、井和自來水中天然放射性核素濃度的調查結果。
- This paper reports the investigation results of natural radioactivity level in river,lake,reservoir,spring, well and tap water in Qirighai Province. 本文報道了青海省江河、湖泊、水庫、泉、井和自來水中天然放射性核素濃度的調查結果。
- This paper reports the investigation results of natural radioactivity level in river,lake,reservoir,spring,well and tap water in Hubei Province. 本文報道了湖北省江河、湖泊、水庫、溫泉、農村井水和城市自來水中天然放射性核素濃度的調查結果。
- This paper reports the investigation results of natural radioactivity level in river,lake ,reservoir ,spring ,well and tap water in Gansu Province. 本文報道了甘肅省江河、湖泊、水庫、泉、井和自來水中天然放射性核素濃度的調查結果。
- This paper reports the investigation results of natural radioactivity level in river,lake,reservoir,spring,well and tap water in Beijing City. 本文報道了北京市河流、湖泊、水庫、溫泉、井和自來水中天然放射性核素濃度的調查方法及主要結果。
- This paper reports the investigation results of natural radioactivity level in river,lake,reservoir,spring,well and tap water in Inner Mongolia Autonomous Region. 本文報道了內蒙古自治區江河、湖泊、水庫、泉、井和自來水中天然放射性核素濃度的調查結果。
- 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). 本文報道了廣東省（含海南省）江河、湖泊、水庫、溫泉、自來水和近海海域海水中天然放射性核素濃度的調查結果。
- 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. 輻射分選是利用含有用元素的礦塊和廢石塊在受照射后反應的差別或其本身放射性的差別而將礦石與廢石分開的一種分選方法。
- 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. 建材源於自然界中的土壤、岩石其中含有一定的天然放射性物質是必然的，也是不足為怪的。
- natural radioactivity background 天然放射性本底
- Polonium is a naturally radioactive metallic element. 釙是一種具有天然輻射性的金屬元素。
- Natural Radioactivity Level in Bone-coal Mines in Zhejiang Province 浙江省放射性伴生石煤礦區天然放射性水平調查
- Artificial Activities and Natural Radioactivity in the Environment 人為活動與環境中的天然放射性
- Determination of Natural Radioactivity in Environmental Samples 環境樣品中天然放射性含量的測定
- Keywords Water;Natural Radioactivity;Investigation;Tianjing; 水體;天然放射性核素;濃度;調查;天津;
- It is natural for a cat to catch mice. 貓捉老鼠是本能。
