abundance of elements

Abundance of elements in stream sediment and geochemical features of typical mining areas in Liaoning

辽宁水系沉积物元素丰度及典型矿区地球化学特征

The Statistical Characteristics of the Abundance of Chemical Elements in the Earth 's Crust

地壳元素丰度的若干统计特征

The abundance of chemical elements in the lithosphere and its structural layers

岩石圈及其结构层的元素丰度

This instrument can be used for gas analysis and determine of isotopic abundance of light elements .

此仪器可用于气体分析以及轻元素的同位素丰度测定。

The abundance of chemical elements in the earth 's crust and its major tectonic units

论化学元素在地壳及其基本构造单元中的丰度

Abundance of chemical elements in Oceanic and continental crust

大洋地壳和大陆地壳的元素丰度

The application of ensemble theory under the conditions of oceanic environment - & statistical explanation for the abundance of chemical elements in the ocean

系综原理在海洋环境条件下的应用&海洋中化学元素丰度的统计解释

The paper studies the abundance of 31 elements ( or oxides ) in 29 surface sediments from Changjiang Estuary and its adjacent sea area .

本文对调查中所采集29个表层沉积物中的31个元素（或氧化物）的含量进行了分析。

With the crustal model and the petrochemical data , the average chemical composition and the abundance of major elements in Xinjiang crust are calculated and explored .

在地壳模型和岩石化学资料基础上，计算和研究了新疆地壳的平均化学成分和主要元素丰度。

Abundance of the elements refers to the relative content of chemical elements and isotopes in all kinds of objects . It is the basis to explain evolution process of celestial objects .

元素丰度是指化学元素及其同位素在各类物体中的相对含量，它是解释各类天体演化过程的基础。

An INAA ( Instrumental Neutron Activation Analysis ) method was used to determine the abundance of rare-earth elements in 58 Late Palaeozoic coals and related rocks in North China .

采用仪器中子活化分析法（INAA）测定了华北晚古生代石炭纪-二叠纪58个煤及煤层夹矸和顶底板样品的稀土元素含量。

Most molybdenum-polymetallic deposits situated in or around small intrusive bodies ; small intrusive bodies which had high abundance of ore-forming elements are source rocks of metallogenesis .

钼多金属矿床主要赋存于小岩体内或其周围区域；小岩体成矿元素丰度高，是钼多金属矿的成矿母岩。

The resources of state-protected plants in the east area of Guangdong Province , China possess the features of richness in composition , antiquity of origin and abundance of endemic elements .

其国家保护植物资源具有种类丰富、古老性强、中国特有现象突出等特点。

The results indicate that the total nutrient content of the rainfall is 40.7 kg / hm2 · a and the relative abundance of the elements is N > Ca > K > Mg > P over the year .

结果表明：降水中养分元素的含量为40.71kg/hm~2·a，各元素含量的序列为N>Ca>K>Mg>P；

Among them , 6 are of grade 1 and 16 are of grade 2.The resources of state-protected plants in the east area of Guangdong Province , China possess the features of richness in composition , antiquity of origin and abundance of endemic elements .

被列为一级重点保护的6种，二级重点保护的16种。其国家保护植物资源具有种类丰富、古老性强、中国特有现象突出等特点。

Based on the theory model , we calculate the abundance of neutron capture elements .

基于以上建立的理论模型来计算中子俘获元素的丰度变化情况。

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 team 's measurement of thorium revealed the overall abundance pattern of heavy elements for this object .

该队的测量发现钍的总体格局丰富的重元素，为这个目的。

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

High abundance of anomalously enriched elements relative to oceanic and crustal sources was observed .

相对于海洋和地壳来源的异常富集元素在西太平洋上空气溶胶中富集程度很高。

Characteristics of rare earth elements , abundance ratios of paired elements and the amounts of metallogenetic elements are also discussed in this paper .

文中还讨论了稀土元素、元素对和成矿元素等特征。

The abundance of those lighter elements allowed scientists to deduce that fission reactions must have gone on for hundreds of thousands of years .

这些较轻元素的含量让科学家推论出，核分裂反应必定进行了好几十万年。

Therefore , the variations of the contents of some trace elements in nodules can show characteristics of the abundance of major mineralization elements and the environmental condition for their formation .

因此，锰结核中的一些微量元素的含量变化，能够反映出主要成矿元素丰度特征和形成时的环境条件。

The relation between the geochemical abundance of exogenetic ore-forming elements and the tectonics of the platform region shows a vertical zoning in the tectonic development of the platform region and a horizontal one in the position of its internal tectonic units .

外生成矿元素的地球化学富集与地台区构造的关系是：在地台构造发展历史上呈现出垂直分带性；在地台区内部构造位置的空间上，呈现出水平分带性。

The quartz syenite from the contemporary-melting type magma activity provided with the main ore-forming materials . The abundance of the ore-forming elements such as Ag , Pb , Zn in this kind of rock is about as 4 ~ 10 times as the average in the world .

同熔型岩浆作用形成的石英正长斑岩是成矿物质的主要提供者，岩石中Ag、Pb、Zn等成矿元素的丰度值普遍较高，约为世界同类岩石平均值的4~10倍，呈强富集状态。

Abundance and distribution of chemical elements of igneous rocks in China

中国火成岩化学元素的丰度与分布

Galactic Chemical Abundance Evolution of α - elements in the Solar Neighborhood

太阳附近α-元素的星系化学演化

After analyzing variance coefficients and features of surface distribution for all elements , it finds that the abundance distribution of all major elements and rare earth elements from Changjiang Estuary and its adjacent sea area are more mean than others .

对多元素进行变异系数和含量平面分布特征分析后，得出长江口及其邻近海域表层沉积物中的常量元素和稀土元素的分布相对较为均匀，受温度、盐度等环境因素的影响较小；

Recent observations show that the abundance patterns of α - elements in the thin and thick disk are distinct , and this difference also appear for some other elements , such as Al , Mn , Zn and neutron-capture elements .

近年来很多工作发现，厚盘恒星的α元素丰度随金属丰度的变化趋势与薄盘不同，这种不同还表现在Al、Mn、Zn、中子俘获元素等其他元素上。

The primary physico-chemical properties , organic matter , total nitrogen , total phosphorus , total potassium , total exchange of positive ions , the content of < 0.01 physical clay and the content , level of abundance and deficiency of trace elements are discussed .

论述了这些土壤类型的主要理化性质，有机质、全氮、全碱、全钾、阳离子代换量、<0.01物理性粘粒含量等及微量元素的含量、丰缺程度。