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痕量元素     
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  trace elements
     Its geochemical characteristics are strong depletion of major elemen Al2O3, TiO2, CaO, Na2O and K2O, but are strong enrichment of REE, trace elements and 87Sr/86Sr.
     其地球化学特点是:主要元素Al_2O_3、TiO_2、CaO、Na_2O、K_2O强烈亏损,而REE,痕量元素和~(87)Sr/~(86)Sr则强烈富集;
短句来源
     The relationship between occurrence of trace elements and gasification temperature in an atmospheric fluidized bed gasifier has been studied in detail, with airflow rate of 7Nm3/h, steam feed rate of 1.32kg/h, coal feed rate of 3.17kg/h and static bed height of 400mm.
     在一台常压流化床气化炉上,维持流化风量7Nm3/h、蒸汽量1.32kg/h、给煤量3.17kg/h、静止床层高度400mm等气化参数不变,详细研究了痕量元素迁移规律与气化温度之间的关系。
短句来源
     Determination of trace elements in copper-zinc alloy by ICP-MS
     ICP-MS测定铜锌合金中痕量元素
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     2. Geochemical characteristic of trace elements;
     2)痕量元素地球化学表征;
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     The chemical compositions and trace elements(REE, Ba, Rb, Sr, Nb, Zr, Ni, Cr, V, Ga, Y, Sc, Zn, Cu etc.)
     本文报道了六合-仪征第三纪大陆碱性玄武岩十八个样品的REE、Rb、Ba、Sr、Nb、Zr、Ni、Cr、V、Sc、Y、Ga、Zn、Cu等痕量元素含量,讨论了该岩套的成因及其地幔源区的特征。
短句来源
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  trace element
     Trace element geochemistry indicates that it is a LREE-slightly enriched basalt with ∑REE, ∑LREE/∑HREE,δEu, Eu/Sm,Sm/Nd similar to those of oceanic tholeiite.
     痕量元素特征表明,玄武岩为轻稀土弱富集型,∑REE、∑LREE/∑HREE、δEu、Eu/Sm、Sm/Nd都显示与大洋拉斑玄武岩一致。
短句来源
     CHANGES OF TRACE ELEMENT CONTENTS IN URINE AFTER THE INHALATION OF CaNa_3-DTPA SPRAYS AND MISTS
     正常人雾化吸入CaNa_3-DTPA后尿中痕量元素含量的变化
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     The Error Distributions of Trace Element Analysis
     痕量元素分析误差分布
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     Random Error Estimation of Trace Element Analysis
     痕量元素分析中的随机误差的估计
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     Some factors impairing the analysis quality of microelement and trace element
     影响微量及痕量元素分析质量的一些因素
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  trace-elements
     RECENT ADVANCE AND IMPORTANCE OF SPECIATION ANALYSIS OF TRACE-ELEMENTS
     痕量元素形态分析技术及其应用研究进展
短句来源
     A batch-infiltration model is introduced to a fluid/rock interaction system ,and the method of induction is used to give a general equation for modeling fluid/rock interaction using trace-elements. Such a path will enlarge the application of trace-element models.
     本文提出理想状态下流体-岩石体系痕量元素模式方程的更一般形式,即在流体-岩石相互作用体系中,引入流体批式作用次数n,采用数学归纳法,给出从封闭到开放体系痕量元素批式作用的一般方程,进而导出流体连续作用的痕量元素模式方程。
短句来源
  trace-element
     Geochemical zoning pattern of trace-element anomalies in 3 different areas gradually extends from 25 km2, 60 km2 to 200 km2, in the known hydrothermically active areas and their vicinities in Tengchong of Yunnan Province, was determined by geochemical surveys on soil and rocks.
     对云南省腾冲已知水热活动区及其邻近区域所做地球化学土壤和岩石测量发现痕量元素异常分带模式,范围从25km~2逐渐扩大至60km~2和200km~2。
短句来源
     Inductively coupled plasma atomic emission spectrometry (ICP-AES) offers extending good advantages in terms of low detection limit, high precision, wide linear range and simultaneous multi-elements determination, widely used in trace-element analysis fields in recent years.
     电感耦合等离子体原子发射光谱法(ICP-AES)由于其具有检出限低、精密度高、选择性好、线性范围宽和多元素同时测定等特点,在痕量元素分析领域得到了广泛应用。
短句来源
     A batch-infiltration model is introduced to a fluid/rock interaction system ,and the method of induction is used to give a general equation for modeling fluid/rock interaction using trace-elements. Such a path will enlarge the application of trace-element models.
     本文提出理想状态下流体-岩石体系痕量元素模式方程的更一般形式,即在流体-岩石相互作用体系中,引入流体批式作用次数n,采用数学归纳法,给出从封闭到开放体系痕量元素批式作用的一般方程,进而导出流体连续作用的痕量元素模式方程。
短句来源
     As a new tool for trace-element analysis and elemental spatial distribution analysis in microarea, scanning proton microprobe (SPM) is becoming more noticeable.
     扫描核探针技术作为一种新的微区痕量元素分析及元素微区分布分析手段越来越引人注目。
短句来源
     Trace-element geochemical features show basaltes in Baiyinchang ore-field formed by mantle partial melting relative to plate subduction in vocanic arc-a production in transposition processes of island-arc into mature island-arc.
     痕量元素地球化学特征表明 ,本区玄武岩应是与板块俯冲作用有关的地幔部分熔融形成 ,成岩环境为火山弧环境 ,是岛弧向成熟岛弧转化过程中的产物。
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  trace elements
This paper tested trace elements and vitrinite reflectance data from the the abnormal high pressure and normal pressure strata profiles, respectively, and found that the acidic and lower salinity starta are favorable for the increase of Ro.
      
Several typical high-toxic trace element coals were collected from different districts and were used to investigate the emission characteristics of toxic trace elements (As, Se, Cr, Hg) and to explore preliminary control methods.
      
Altered Balance of Macroelements and Trace Elements in Blood Serum, Its Ultrafiltrates, and Hairs Long after Exposure to Low Dos
      
Studies continued over a period of time provided evidence for a distinct change in the balance of macroelements and trace elements in the studied biological substrates of irradiated individuals.
      
The level of toxic trace elements (lead, cadmium, and aluminum) did not exceed physiologically acceptable levels, while their content in hairs may be a biological indicator of their accumulation in the body.
      
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  trace element
The tectonic environment discrimination by trace element reveals that these igneous complexes formed in an island-arc setting.
      
Systematic results of major and trace element geochemistry and Sm-Nd isotopic geochemistry on detrital sedimentary rocks of Precambrian to Triassic in the Ganzi-Songpan block and Longmen Mountains are presented.
      
Seven pore water samples were analyzed for their anion (Cl-, SO42-, Br-, I-) contents, cation (Na, K, Ca, Mg) contents and trace element (Li, B, Sr, Ba, Rb, Mn) contents.
      
In addition, the characteristics of petrochemical parameters, trace element contents and rare earth element distributions of different rock types of the granitoids in different geotectonic units are also sufficiently discussed.
      
This research will provide valuable information for optimizing and selecting a sorbent for the trace element in flue gas.
      
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  minor element
Trace and minor element geochemistry of Xiangdong tungsten deposits
      
Different types of alteration might result in variance of distribution of the same trace or minor element.mNb/mTa andmMn/mFe ratios, contents of Nb and Ta in wolramite vary with vein groups' location.
      
Minor element enrichment in manganese nodules relative to seawater and marine sediments
      
The rim zones in the case of the major elements may be the result of diffusion out into the surrounding minerals, whereas the minor element distribution is possibly a primary one related to the growth of the linnaeite grains.
      
Minor element geochemistry of sulphide minerals in the Broken Hill Lode (N.S.W.) in relation to the origin of the ore
      
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  trace-elements
Accordingly, the interpretation of the silicate inclusions within these chromites and the interpretration of the trace-elements distribution need great care.
      
Cu, Te, Sb and Bi are the most common trace-elements in gold and electrum.
      
In addition to one of these organic substrates, vitamins, amino acids and some trace-elements were required for growth.
      
Matrix-matched quantitative analysis of trace-elements in calcium carbonate shells by laser-ablation ICP-MS: application to the
      
An ionic model and the Mott-Littleton two-region approach to defect energies were used to calculate the energetics of substitution by a range of divalent trace-elements and of charge-balanced substitution by trivalent ions in the static limit.
      
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