1)natural radioactivity天然放射性
1.Studies on natural radioactivity of soil in Xiazhuang uranium ore field, Guangdong;广东下庄铀矿田土壤的天然放射性研究
2.Environmental survey and assessment of natural radioactivity for a certain area of Jiangsu province江苏省某地区天然放射性环境调查与评价
3.Considering the need in environmental natural radioactivity measurement,a series of Secondary Certified Natural Radioactivity Environment Reference Materials——GBW(E)040012~GBW(E)040015 were prepared according to Technical Specification of Primary Reference Material.为满足国内天然放射性检测工作的需要,参照国家一级标准物质技术规范,研制了系列天然放射性环境分析标准物质,包括铀-镭,钍,钾及铀、镭、钍、钾混合标准物质共4种,已于2004年批准为国家二级标准物质GBW(E)040012~GBW(E)040015。
英文短句/例句
1.extinct natural radionucleus消失的天然放射性核
2.secondary natural radionuclides次生天然放射性核素
3.extinct natural radionuclides消失的天然放射性核素
4.induced natural radionuclide感生天然放射性核素
5.INVESTIGATION OF NATURAL RADIOACTIVITY LEVEL OF THE WATERS IN BAOTOU AREA包头地区水体中天然放射性水平调查
6.Natural radioactivity contains a store of valuable information.天然放射性包含着许多有价值的信息。
7.The Monte Carlo Stimulation of Natural Radial γ Energy Spectrum;天然放射性场γ能谱的蒙特卡罗模拟
8.Analysis of natural radioactivity level of the typical fly ash from guizhou province贵州典型粉煤灰天然放射性水平分析
9.Crude Radioactivity Measure of Coal Dust Based on HPGe γ-ray Spectrometer基于HPGeγ谱仪的粉煤灰天然放射性测量
10.Survey on Natural Radiation of Coal Ash and Slag in Xiaolongtan Power Plant小龙潭电厂煤灰渣天然放射性调查研究
11.Determination of Uranium, Thorium and Potassium Elemental Concentrations in Surface Soils in Suzhou;苏州市土壤~(238)U、~(232)Th、~(40)K天然放射性水平调查
12.Environmental survey and assessment of natural radioactivity for a certain area of Jiangsu province江苏省某地区天然放射性环境调查与评价
13.Natural specific activety in building materials and dose estimation郴州地区建材天然放射性水平及其剂量估算
14.Estimation of Natural Terrestrial External Exposure Levels of Nuclides in Soils in Chengdu成都市土壤天然放射性核素的外照射水平估算研究
15.Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.α粒子是从天然放射性蜕变得到的带正电的氦核。
16.APPLICATIONS OF NATURAL ISOTOPES OF ~7Be AND ~(210) Pb IN ATMOSPHERIC SCIENCE天然放射性核素铍-7和铅-210在大气示踪研究中的应用
17.Natural Radioactive Nuclide Level of the Agricultural-animal Products and Annual Comunity Intake in Lanzhou City;兰州市农畜产品天然放射性核素含量水平与公众年摄入量
18.The investigation and analysis on natural radioactivity nuclide specific activity of cement product in china我国水泥产品天然放射性核素比活度的调查分析
相关短句/例句
natural radionuclide天然放射性核素
1.Survey on the natural radionuclide in a mine;某矿山天然放射性核素的调查
2.Specific activity and distribution of natural radionuclides and ~(137)Cs in surface sediments of the northeastern South China Sea;南海东北部表层沉积物天然放射性核素与~(137)Cs
3)Natural radioactive nuclide天然放射性核素
1.A report is made on the results of analysis the content of natural radioactive nuclide in 33 samples of building stone commonly used in South Fujian.报道闽南常用石材的 33个样品中 ,天然放射性核素含量的分析结果 ,并按照国家有关石材产品分类标准进行划分 。
4)natural radionuclides天然放射性核素
1.A report is made on the inspection results of the content of natural radionuclides of decorative stone and glazed tiles commonly used in Xianyang.报道了咸阳市常用装饰石材及彩釉砖样品中天然放射性核素含量的调查分析结果,并据国家建筑材料放射性核素含量最新标准进行分类分析。
5)natural radioactivity天然放射性水平
1.The evaluation of natural radioactivity using the geochemical prospecting data in 1∶50000 scale;运用1∶50000化探数据评价天然放射性水平
6)environmental natural radioactivity环境天然放射性
1.The present paper makes an approach to feasibility and technique of the application of gamma-ray spectrometry to the assessment of environmental natural radioactivity in uranium exploration.在铀矿找矿工作中 ,许多地区开展了γ能谱测量 ,如何将γ能谱资料应用到环境天然放射性水平评价中 ,本文从其可行性及技术方法进行探索研究。
延伸阅读
放射性衰变放射性衰变 又称"放射性核衰变"。放射性元素的原子核不稳定,能自发地、不断地放出某种射线而转变为另一种元素的过程。这种变化不受外界因素的影响。