1) native radioactive curve
天然放射曲线
2) 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。
3) natural decay series
天然放射系
1.
Disequilibrium of natural decay series in sediments of intertidal mudflats of Xiamen;
厦门潮间带表层沉积物天然放射系不平衡研究
4) 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
5) 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 。
6) 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。
补充资料:长寿命天然放射性核素
分子式:
CAS号:
性质:指半衰期和地球年龄(46亿年)相当或更长的、在自然界存在的放射性核素。主要是40K,235U,238U,232Th,87Rb,50V,113Cd,115In,123Te,138La,144Nd,147Sn,148Sm,152Gd,156Dy,176Lu,74Hf,187Re,186Os,190Pt。
CAS号:
性质:指半衰期和地球年龄(46亿年)相当或更长的、在自然界存在的放射性核素。主要是40K,235U,238U,232Th,87Rb,50V,113Cd,115In,123Te,138La,144Nd,147Sn,148Sm,152Gd,156Dy,176Lu,74Hf,187Re,186Os,190Pt。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条