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metallurgical
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  冶金
     Influences of EMBr on Metallurgical Behavior and Slab Quality in CSP Processes
     EMBr对CSP结晶器内冶金过程和铸坯质量的影响
短句来源
     METALLURGICAL EFFECT OBTAINED BY RH VACCUM DEGASSING PROCESS
     RH真空脱气处理的冶金效果
短句来源
     METALLURGICAL PROCESS SIMULATION
     冶金过程模拟
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     METALLURGICAL REACTION IN Q-BOP, BOTTOM-BLOWN LD, ARGON-STIRRED LD AND LD
     在Q-BOP法,底吹LD法,氩气搅拌LD法和LD法中的冶金反应
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     The Application of Simulation Technique in Metallurgical Automation
     仿真技术在冶金自动化中的应用
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  冶炼
     Three metallurgical processes for 1Cr18Ni9Ti steel are described.
     介绍了1Cr18Ni9Ti钢的3种冶炼工艺。
短句来源
     Sulphuric acid production will be 6 491 kt, including 4 655 kt from metallurgical off-gases and 1 646 kt from sulphur.
     2004年预计生产硫酸6 491 kt,其中冶炼烟气制酸4 655 kt、硫磺制酸1 646 kt;
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     Introduced the metallurgical technology of Fe-Cr- Co Workable permanent magnet 2J85 melted in vacuum furnace, utilizing its returned material, and researched the influence of the returned material on the physical properties of Fe-Cr-Co workable permanent magnet 2J85.
     介绍了在真空炉中,利用Fe~Cr~Co永磁合金返回料冶炼2J85 Fe—Cr—Co变形永磁合金的冶炼工艺,及返回料对2J85 Fe~Cr~Co变形永磁合金物理性能影响的研究。
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     Study on metallurgical technology of T10A tool steel
     碳素工具钢(T10A)冶炼工艺的研究
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     The Effection on Ironmaking Raw Materials and Metallurgical Process by High Content of Al_2O_3 Iron Ore
     富Al_2O_3矿对炼铁原料及冶炼过程的影响
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  “metallurgical”译为未确定词的双语例句
     The Researching of Modeling and Optimizing In The Production Process of Metallurgical Enterprise
     轧钢企业生产过程建模与优化研究
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     APPLICATION OF THE METALLURGICAL REACTION ENGINEERING TO IRONMAKING
     反应工程学在炼铁工业中的应用
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     ON THE METALLURGICAL PROBLEMS OF SOME PRECIPITATION HARDENING STAINLESS STEELS
     某些沉淀硬化不锈钢的金属学问题
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     Significance of Producing Low-ash Metallurgical Coal in Relation to Energy Saving
     生产低灰炼焦精煤对节能的重要意义
短句来源
     A METALLURGICAL STUDY ON LOW FLUORINE AND FLUORINE-FREE SLAG FOR ELECTROSLAG REMELTING
     低氟渣及无氟渣电渣重熔研究
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  metallurgical
Genesis of metallurgical defects in titanium alloys
      
Permeable porous media are widely occurring in nature and are frequently used in various apparatuses in the metallurgical, chemical, and electric-power industries.
      
N-Aryl-3-Aminopropionic acids as selective reagents for the determination of copper in metallurgical products
      
The optimum conditions were found and procedures were developed for the spectro-photometric determination of copper in metallurgical products.
      
Contents of PGE and Au in nickel oxide-silicate ores of the Moa and Nikaro deposits, as well as their reworking products in the Moa and Nikaro ore metallurgical plants, have been determined.
      
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An electrophotometric method has been worked out for the determination of magnesium in cast iron using titan yellow as indicator.Briefly,the method consists of dissolving the sample in dilute sulphuric acid,separating iron and other metals such as copper and nickel by electrolysis with mercury cathode and precipitating manganese from ammoniacal solution with ammonium persulfate.Ammonimn salt,silica and traces of aluminaare thenremoved. Finally,the prepared titan yellow reagent is added to the solutionand the...

An electrophotometric method has been worked out for the determination of magnesium in cast iron using titan yellow as indicator.Briefly,the method consists of dissolving the sample in dilute sulphuric acid,separating iron and other metals such as copper and nickel by electrolysis with mercury cathode and precipitating manganese from ammoniacal solution with ammonium persulfate.Ammonimn salt,silica and traces of aluminaare thenremoved. Finally,the prepared titan yellow reagent is added to the solutionand the magnesium content determined from the electrophotometric reading.The time required for each determination is approximately 5 hours. The effect of interfering elements which are likely present in cast iron such as manganese, silicon,phosphorus, aluminum, copper, nickel and vanadium as well as ammonium ion and alkali and alkaline earth metals has been studied and discussed.It has been shown that manganese, silicon, aluminum,copper,nickel,iron and ammonium ions can be removed down to such low values as to cause no significant interference.Phosphorus under 0.4% has no appreciable effect.Vanadium is not separated in the present method,but fortunately it is usually present in insignificant amounts in ordinary cast iron.The effect of calcium is compensated by the introduction of saturated calcium sulphate solution before the titan yellow addition. Potassium and sodium have no appreciable effect when present in small amounts. The results obtained by the present method for the determination of magnesium in 11 known samples are good,the average difference being 0.002% in a range of 0.000% to 0.140% Mg.The data obtained by the present method are also in good agreement with those obtained by gravimetric methods On seven nodular iron samples made by the Metallurgical Division of our Institute.A detailed procedure for the determination of magnesium in cast iron has been suggested and included in this paper.In view of its rapidity and fair accuracy,the new photometric method might prove useful for the purpose of control in a nodular iron foundry.

本文报告将地丹黄比色法应用於测定铸铁中之镁的试验结果.如将铁、锰、铝、矽等干扰物质预先除去,则镁的测定并无困难.依照本文所擬的方法分析,所需时间约为五小时,较重量法迅速得多.

This paper describes the nature of striated inclusions present in certain mildsteel plates,the origin of such inclusions is discussed.Microscopic examinations supplemented by X-ray diffraction studies show thatthe main constituents of the striated inclusions present in the steel plates appearto be the same as found in the attacked layer of fire-clay refractories which predo-minately consist of mullite(3Al_2O_3·2SiO_2)and cristobalite.Taking into accountthe metallurgical history of the plate and change...

This paper describes the nature of striated inclusions present in certain mildsteel plates,the origin of such inclusions is discussed.Microscopic examinations supplemented by X-ray diffraction studies show thatthe main constituents of the striated inclusions present in the steel plates appearto be the same as found in the attacked layer of fire-clay refractories which predo-minately consist of mullite(3Al_2O_3·2SiO_2)and cristobalite.Taking into accountthe metallurgical history of the plate and change in the chemical compositionof the refractories brought about during teeming,there is reason to believe thatstriated inclusions in steel may be originated from the refractories caused bythe attack of MnO or MnO·FeO present in the liquid steel.

本文叙述在某低碳钢板材夹层所观察到的非金属夹杂物的特征,并对夹层的来源进行了分析。金相检查结合X射线鉴定结果指出矽酸盐夹层与受钢液侵蚀过的粘土耐火材料的矿物组成大致相同,主要为莫来石(3Al_2O_3·2SiO_2)及方石英。根据钢的生产过程,夹杂物的特征及粘土耐火材料受钢液侵蚀后化学成分改变的情况,认为矽酸监夹层的来源可能与钢液中的MnO或MnO·FeO侵蚀粘土耐火材料有关。这种分析并得到了理论的解释。

Various procedures for spectrographic analysis of metallurgical slags have been found inthe literature,but,in practice,results are often influenced by the chemical nature of the samples.This paper reports some results obtained on the spectrographic analysis of open-hearth slags bythe copper cup-electrode solution method.An activated a.c.arc (ПС-39) is used as light source.To the nitric acid solution ofslag samples is added stannous chloride (Sn as internal standard) and potassium bromide (Kfor the stablization...

Various procedures for spectrographic analysis of metallurgical slags have been found inthe literature,but,in practice,results are often influenced by the chemical nature of the samples.This paper reports some results obtained on the spectrographic analysis of open-hearth slags bythe copper cup-electrode solution method.An activated a.c.arc (ПС-39) is used as light source.To the nitric acid solution ofslag samples is added stannous chloride (Sn as internal standard) and potassium bromide (Kfor the stablization of the arcing).The prepared solution is then treated in a hot water-bath.The size and shape of the cup-electrode is so chosen that the height of the solution surface doesnot vary much during exposure.Because of the non-uniform distribution of the elements tobe analysed in the arc column,the slit is illuminated directly from the arc without using lenses.With fixed working curves we have obtained the lime-to-silica ratio of 20 slag samples.The differences between spectrographic and chemical values are less than ±5%.The completeanalysis of a few slag samples has been also carried out and the accuracy is found to be aboutthe same as those published in the literature.Causes for shifts of working curves in the course of experiments and means of prevention,and the problem of the dissolution of slags in nitric acid are discussed.Experiments indicatethat the turbulent effect of solution samples in the cup-electrode during arcing is advantageousand necessary.

本文叙述用杯形铜电极溶液法进行平炉渣光谱分析的一些结果。实验用ПС-39型交流电弧作光源,硝酸溶解渣样,加 SnCl_2(Sn 作内标)和 KBr(K 作燃烧稳定剂),并且把这溶液经过加热处理。再适当地选定了铜杯的大小和形状,和采用了直接照明系统。用固定定标曲线法作了20个渣样的硷度(Ca/Si)分析。与化学分析结果比较相差小于±5%。最后讨论了铜杯溶液法进行分析时定标曲线发生移动的原因和防止的方法,试样在硝酸溶液中溶解的问题,与试样溶液在燃烧过程中的翻腾现象。致谢:参加本项工作一部分的尚有周熙宁、徐升美、王桢枢等同志,谨此致谢。

 
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