Based on the results of the study of regional element abundances in eastern China and 1∶200000 geochemical survey in northern Xinjiang,the element geochemical characteristics of the exposed crust in 23 tectonic units of the continent of China are summarized.
根据中国东部上地壳区域元素丰度研究和新疆北部地区1∶20万化探成果,总结了23个二级大地构造单元出露地壳的元素地球化学特征。
Adopting new nucleosynthesis scenario and branch s-process path,we calculated the surface abundances of solar metallicity 3M ·○ TP-AGB star with different initial abundances value:solar heavy element abundances,pure r-process and pure main s-process component of solar heavy element abundances,respectively.
采用新的 s-过程核合成模型和分叉 s-过程反应通道 ,分别取太阳系重元素丰度、太阳系纯 r和 s-main分量的重元素丰度作初值 ,计算了太阳金属丰度 3M○· TP-AGB星表面重元素丰度 。
A correlation between content of iron element and organic carbon in the source rocks, Late Permian to Early Triassic in the Shiwandashan Basin,South China;
十万大山盆地晚二叠世、早三叠世烃源岩中铁元素丰度与有机碳丰度相关关系
Brief summary on the one hoteltopic of nuclear astrophysics-study methods,history,current situation and present problems of the heavy element abundances in metal-poor stars is presented in this paper.
简要综述了核天体物理学热点课题———贫金属星重元素丰度的研究方法、历史、现状及存在的问题 ,指出了该领域今后的主攻方向。
The elemental geochemistry characteristics indicate that elements abundance is controlled seriously by grain size of sediment.
元素地球化学特征表明，元素的丰度受沉积物粒度控制明显。
Comparison of S-elements Abundance in Strong Bariun Stars and Mild Bariun Stars;
强钡星和弱钡星s-元素丰度的分析
A Calculative Method of Element Abundances in the Envelope of AGB Stars;
一种AGB星外包层元素丰度的计算方法
ROBUST ELEMENT ABUNDANCE ANALYSIS AND ELEMENT ABUNDANCE OF THE UPPER DEVONIAN STRATA IN NANDAN-HECHI BASIN, GUANGXI PROVINCE
稳健丰度分析及丹池盆地上泥盆统元素丰度的意义
There is an argument to express them in ground level abundance of the respective elements.
有理由把它们用相应元素的地平丰度来表示。
The Effect of Mass Accretion on Elemental Abundances of Metal-Poor Extrinsic AGB Stars;
物质吸积对贫金属外赋AGB星元素丰度的影响
Comparison of the methods of calculating the abundances of heavy elements in metal-poor stars;
计算贫金属星重元素丰度分布方法的比较
Component proportions of the abundances of three typical heavy elements in metal-poor stars;
贫金属星三种典型重元素丰度的分量比例
The Heavy R-process Elements Yields and Abundances Scatter in the Halo of Galaxy
星系晕较重r-过程元素产量和丰度的离散
Comparation on abundance of rare earth elements in Huainan coals and their combustion products
淮南煤及其燃烧产物中稀土元素丰度的比较
The isotopic abundance ratio and content are determined with isotopic mass-spectrometry.
文章用同位素质谱法测定了辐照堆元件铀的同位素丰度比和含量。
Petrographically and mineralogically similar rocks quite often have different concentrations of radioactive elements.
岩石学矿物学上类似的岩石，其放射性元素丰度却往往有所不同。
Sodium is the sixth most abundant element in the earth's crust.
钠是地表中含量第6丰富的元素。
A Study on the Abundance Relationships Among Trace Elements and Its Application;
微量元素地球化学丰度关系及其应用研究
According to REE abundances in the host rocks and the partition coefficients of cryst-liquid, the history of crystal separation of magma can be traced.
据寄主岩的稀土元素丰度与晶液分配系数,追溯了岩浆的结晶分离历史。
"Iron is the most used and cheapest metal, the second most abundant metal and fourth most abundant element in Earth's crust."
铁是最常使用和最便宜的金属,在地壳中,其丰度在金属中居第二位,在所有元素中排在第四位。
" Cerium :Chemical element, a rare earth metal of the lanthanide series (hence having many properties of the transition elements), chemical symbol Ce, atomic number 58."
铈:化学元素,周期表IIIB族过渡金属中丰度最大的稀土金属。化学符号Ce,原子序数58。
Measurement of Isotopic Element Rb s Abundance Ratio with Optical Pumping Magnetic Resonance Method;
光泵磁共振法测量同位素铷的丰度比