助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   content 在 化学 分类中 的翻译结果: 查询用时:0.201秒
图标索引 在分类学科中查询
所有学科
化学
中药学
有机化工
药学
冶金工业
高等教育
轻工业手工业
中国文学
体育
更多类别查询

图标索引 历史查询
 

content
相关语句
  含量
    STUDIES ON THE EXCIMER FLUORESCENCE OF BUTADIENE-STYRENE COPOLYMER OF LOW STYRENE CONTENT
    低苯乙烯含量的丁二烯-苯乙烯共聚物的激基缔合物荧光研究
短句来源
    STUDY OF THREE CHEMICAL ANALYTICAL METHODS FOR DETERMINATION OF FURFURAL CONTENT
    三种化学分析法测定糠醛含量试验
短句来源
    Determination of Deuterium Content of K(D_xH_(1-x))_2 PO_4 by Interference Method
    干涉法测定K(D_xH_(1-x))_2P0_4中的氘含量
短句来源
    Rapid Determination of Calcium Content in Additives and Petroleum Products
    添加剂及石油产品中钙含量的快速测定
短句来源
    Analysis of Silver Content and Halogen Ratio in Photographic Films by X-ray Fluorescence Spectrometry
    感光胶片中银含量和卤素比的X射线荧光光谱分析
短句来源
更多       
  浓度
    Study of Molecule-Ion Composition in SO_3-HNO_3 and HNO_3-H_2S_2O_7 Solution and Determination of NO_2~+ Content by Laser-Raman Spectroscopy
    用激光拉曼光谱研究SO_3-HNO_3和HNO_3-H_2S_2O_7溶液的分子-离子组成及测定NO_2~+的浓度
短句来源
    Effect of Content of Hard Segment on Structures and Properties of RIM Crossl inking Polyurethanes
    硬链段浓度对RIM交联聚氨酯结构和性能的影响
短句来源
    And the adsorption content is optimal when the temperature is 30℃,pH=2.65,adsorption time is 6 h and initial concentration is 120 mg/L.
    对酚的最佳吸附条件是:温度为30℃,pH=2.65,吸附时间为6 h,酚的初始质量浓度为120 mg/L。
短句来源
    The effects of Tb3+ content on luminescent spectra were studied for both the nano and bulk Y2O2S systems.
    讨论了纳米材料和体相材料Y2O2S:Tb3+中Tb3+的掺杂浓度对荧光性能的影响.
短句来源
    It was showed that photocatalytic reduction of Hg2+ by TiO2 had a remarkable effect on low concentrations of mercury and the reduction rate was over 90%. The method could dramatically reduced the content of toxic Hg(Ⅱ) in industrial waste water samples.
    结果表明:纳米TiO2对低浓度Hg2+溶液光催化还原效果显著,还原率可达90%以上,并且可以大幅降低工业废水中Hg(Ⅱ)的浓度.
短句来源
更多       
  “content”译为未确定词的双语例句
    Determination of Chlorine Content in A.C.S with Chloride-ion Selective-electrode
    用氯离子选择性电极测定高聚物A.C.S中的含氯量
短句来源
    Determination of So_3 Content of Cement by Potentio--metric Titration Using a lead Electrode
    用铅电极电位滴定法测定水泥中SO_3
短句来源
    SYNTHESIS AND CHARACTERIZATION OF POLYBUTADIENE RUBBER WITH LOW VINYL STRUCTURE CONTENT
    低乙烯基聚丁二烯橡胶的合成和表征
短句来源
    Determination of Surface Oxygen Content in Highly Pure Copper
    高纯铜中表面氧的测定
短句来源
    DETERMINATION OF THE URANIUM CONTENT AND 234U/238U ISOTOPE RATIO IN NATURAL WATER BY ISOTOPE DILUTION ALPHA SPECTROMETRY.
    同位素稀释-α能谱法测定水中微量铀及~(234)U/~(238)U比值
短句来源
更多       
查询“content”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  content
Most of the compounds increase the cAMP content of CHO cells expressing the human A1-adenosine receptor, indicating an antagonist activity.
      
Results obtained both by molecular mechanics and semiempirical methods indicate that for ameltolide, the cis and trans forms have similar energy content.
      
The influence of methanol content, pH value, ion types, and ionic strength of mobile phase are studied in detail.
      
The surface concentration of 3,5-dinitrobenzoyl ligand is 2.082 μmol m-2, according to the carbon content of elemental analysis.
      
The content of the volatile components in blue ballpoint pen ink were determined by gas chromatography (GC).
      
更多          


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.

The hydroquinone method has been applied to the determination of tungsten in ores. Tungsten ore is fused with Na_2O_2 and Na_2CO_3 and followed by extracting with hot water. Most of the interfering ions are thus removed except molybdenum which remains sn the solution with tungsten. Since the amount of molybdenum is usually low its interference can be prevented by the addition of suitable amount of Sncl_2 and H_3PO_4.The results obtained by this method are good even with Ores of high tungsten content (70%)....

The hydroquinone method has been applied to the determination of tungsten in ores. Tungsten ore is fused with Na_2O_2 and Na_2CO_3 and followed by extracting with hot water. Most of the interfering ions are thus removed except molybdenum which remains sn the solution with tungsten. Since the amount of molybdenum is usually low its interference can be prevented by the addition of suitable amount of Sncl_2 and H_3PO_4.The results obtained by this method are good even with Ores of high tungsten content (70%).

1.對苯二酚比色法测定鎢必須在濃硫酸溶液中進行顯色,少量水存在使顏色深度減低;可加入過量的對苯二酚溶液避免魧Ρ蕉尤芤河昧繛?0毫/25毫升,則允許的含水量為4毫升/25毫升。2.少量钼酸根的干擾可加入適量的SnCl_2—H_3PO_4掩蔽,但若钼的含量超過16微克/毫升時,必須預先進行分離。3.用對苯二酚法测定鎢礦中鎢的含量, 得到尚满意的結果;测定範圍可高達70%。應用此法测定所需時間約為重量法的五分之一。

Although nitriding provides us with an iron catalyst of good durability and resistance to carbon deposition,it brings at the same time a higher methane form- ation during synthesis,this has hindered its application in industry. Accordingly,factors effecting this main side-reaction were thoroughly studied. They are:reaction temperature and pressure,space velocity,particle size of catalyst, alkaline content in catalyst,method of reduction,degree of nitriding,and aging of catalyst.With the exception of space...

Although nitriding provides us with an iron catalyst of good durability and resistance to carbon deposition,it brings at the same time a higher methane form- ation during synthesis,this has hindered its application in industry. Accordingly,factors effecting this main side-reaction were thoroughly studied. They are:reaction temperature and pressure,space velocity,particle size of catalyst, alkaline content in catalyst,method of reduction,degree of nitriding,and aging of catalyst.With the exception of space velocity,all of these independent variables play quite important roles iu effecting the yield of methane.The relative impor- tance of these variables are discussed in detail.Among them,the alkaline content and operation pressure are the most influential.With the increase of the alkaline content from 0.8 to 1.7g K_2O/100g Fe (by impregnation),methane formation can be effectively depressed,for example,at 7 atm.and 15 atm.,CO converted to methane is reduced from 7-9% to 5-6% and from 5-7% to 3% respectively.Further- more,the tendency of increase in methane formation with time can also be checked by addition of alkaline. The product distribution has been correlated with methane formation by sum- marizing data reported in literatures and our own results.Presumably methane is essentially formed on some special locations on the catalyst.However,the operation conditions which favor the formation of light hydrocarbons always enhance the for- mation of methane at the same time,so that there appears some parallelism between them. The mechanism of methane formation and the reason for its steady increase in life tests are also discussed.

在已经解决了氮化熔铁催化剂的活性维持问题及原料气体合理利用的基础上,进一步研究了合成时的一个主要副反应——CH_4的生成——与各项操作变数的关系.确定了反应温度、压力、空间流速、催化剂粒度、催化剂的酸含量、还原方法、氮化度及催化剂的存放时间等独立变数对 CH_4生成率的影响,指出应用浸渍法适当增加催化剂的碱含量并采用较高的反应压力(15气压左右)可以抑制 CH_4的生成率到已转化的 CO 的3%左右.以上措施对和缓 CH_4生成随时间增加的趋势也有良好的影响.综合实验结果,论证了 CH_4生成率与产品轻重间的依附关系,并对 CH_4生成的原因及其随合成时间而逐渐增加的现象作了初步理论上的探讨.

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关content的内容
在知识搜索中查有关content的内容
在数字搜索中查有关content的内容
在概念知识元中查有关content的内容
在学术趋势中查有关content的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社