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   strontium-90 在 环境科学与资源利用 分类中 的翻译结果: 查询用时:0.021秒
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strontium-
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  “strontium-90”译为未确定词的双语例句
    SEPARATION AND DETERMINATION OF STRONTIUM CESIUM AND CERIUM
    锶-90、铯-137、铈-144的分离和测定
短句来源
    ANALYSIS OF STRONTIUM-90 IN ENVIRONMENTAL SAMPLES WITH DICYCLOHEXYL-18-Crown-6
    二环己基-18-冠-6测定环境样品中锶-90
短句来源
    DIRECT DETERMINATION OF STRONTIUM AND LITHIUM IN SEA WATER BY FLAME EMISSION SPECTROPHOTOMETRY
    直接火焰发射分光光度法连续测定海水中的锶和锂
短句来源
    THE KINETIC BEHAVIOUR OF STRONTIUM-89 IN THE SIMULATED PADDY AND POND
    模拟水稻田和模拟池塘中~(89)Sr的动力学行为
短句来源
    Effect of calcium on accumulation of strontium-89 in the potato and rice.Journal
    钙对锶-89在马铃薯与水稻中积累的影响
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  strontium-
Die Behandlung der Keratitis superficialis chronica des Hundes mit Strontium-90
      
The factors relating the ground deposition of strontium-90 to its concentration in the human bone have been discussed.
      
The estimated concentrations of strontium-90 in the human bone are 4.8, 26.5 and 76μμC strontium-90 per gram of bone calcium for cases (i), (ii) and (iii) respectively.
      
Strontium-90 hingegen bildet schwerl?sliches Sulfat und hat eine annehmbare Halbzeit.
      
Gegen Termiten waren nur solche Papiere best?ndig, die mit einer L?sung von 1 Millicurie/cm3 Strontium-90-nitrat impr?gniert waren.
      
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A mineral standard reference material, potassium feldspar, is established for the Rb-Sr dating and the trace rubidium and strontium determination. The sample is collected from a pegmatite in the Huangling granite of about 800 Ma in age. The sample is carefully selected and cleaned before and during the sample preparation. The sample is sieved to less than 200 mesh. After sufficiently stirring to make the sample homogeneous, the sample is split into units with about 10 grams in weight and stored in glass...

A mineral standard reference material, potassium feldspar, is established for the Rb-Sr dating and the trace rubidium and strontium determination. The sample is collected from a pegmatite in the Huangling granite of about 800 Ma in age. The sample is carefully selected and cleaned before and during the sample preparation. The sample is sieved to less than 200 mesh. After sufficiently stirring to make the sample homogeneous, the sample is split into units with about 10 grams in weight and stored in glass bottles with plastic covers. About 3×3n1/2 of the total amount of sample bottles are analysed to examine the homogeneity of Rb and Sr concentration and 87Sr/86Sr ratio in the samples. Based on the statistical estimate of analytical data, all the F values of Rb and Sr and 87Sr/86Sr are smaller than the respective critical F value and a good homogeneity of the sample is concluded. Based on the data duplicately measured by nine laboratories on the prepared material, the certificate values for three quantities of the sample are concluded as follows(95% confidence level). Rb-249.47±1.04 ppm, Sr-158.92±0.70 ppm; 87Sr/86Sr-0.75999±0.00020 ppm. The BMR of Australia and Geological Survey of Japan also provided duplicated data on one of the sample units and the results are in agreement with our data within analytical error.

本文报导了铷锶同位素年龄标准物质的研制结果。文中叙述了本标准物质的样品选择、采集、加工、均匀性检查、定值分析及对测定数据的统计学检验等内容。根据国内9个实验室的定值分析结果求出了本标准物质三项特征量值的最佳估计值和不确定度,提出了推荐值。文中还介绍了对本标准物质的国际验证数据和经过一年多对本标准物质稳定性检查的结果。

Mineral spring water is a very complicated physicochemical system.Begining with the angle of inorganic geochemistry and chemical thermodynamics,this paper discusses the chemistry and the stable isotope characteristics of silicon,strontium,radon,as well as carbonate in drinking nat- ural theromoetallic water in Wolong area.The chemical fundamental information for the further resarch of hydro-geochemistry,environmental chemistry and biochemistry on the water is also provided.

矿泉水是一个十分复杂的物理化学体系。本文从无机地球化学和化学热力学的角度出发,讨论了卧龙饮用天然热矿水的硅、锶、氡、碳酸盐化学和稳定同位素特征。为该矿水水文地球化学、环境化学和生物化学等方面的进一步研究提供了化学基础资料。

Laboratory studies and full-scale tests of a desulfurization process during coal briquet combustion involving calcium-based sorbents and foreign ion promoters have been carried out for sulfur dioxide emission control of coal-fired industrial boilers in China. Characterization of the sulfur species retained in the coal ash indicates the presence of calcium aluminum silicate sulfate apart from calcium sulfate. The formation of this complex sulfate, which is thermally more stable than the simple calcium sulfate,...

Laboratory studies and full-scale tests of a desulfurization process during coal briquet combustion involving calcium-based sorbents and foreign ion promoters have been carried out for sulfur dioxide emission control of coal-fired industrial boilers in China. Characterization of the sulfur species retained in the coal ash indicates the presence of calcium aluminum silicate sulfate apart from calcium sulfate. The formation of this complex sulfate, which is thermally more stable than the simple calcium sulfate, can be hastened, provided that some promoters, such as strontium-containing tailings, have been incorporated in the calcium-based sorbent in small amounts. Full-scale combustion of coal briquets with sorbents and promoters in stoker boilers has proven that a sulfur dioxide removal efficiency around 60-70% is achievable. Such a removal efficiency is comparable with that of dry injection processes,and hence is acceptable.

本文论述了锶化合物在高温燃烧条件下固硫反应的促进作用,通过X-射线粉晶衍射及扫描电镜的研究,证明形成含硫酸钙的复合盐的生成是提高固硫率的关键.用该方法制成的工业型煤,在实际锅炉中试烧其固硫率可达70%,是烟气排烟脱硫的有效方法之一,对净化大气,减少污染有现实意义.

 
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