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
   additive compounds 的翻译结果: 查询用时:0.077秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

additive compounds
相关语句
  饲料添加剂复方
     Comparison of weight-gain of chicken supplemented with different Chinese herbal medicinal additive compounds
     不同中药饲料添加剂复方促进肉鸡增重效果的比较
短句来源
  “additive compounds”译为未确定词的双语例句
     Experiments indicated that the surface-active properties of the additive compounds would be the best when the molecular number of epihydrin was 8-10 and that of the ethylene oxide was 20-25.
     实验证明:当环氧丙烷加成数为8~10mol,环氧乙烷加成数为20~25mol时,加成物的表面物性最佳。
短句来源
     Comparative Study on EP and AW Performance of Three Kinds of Gear Oil Additive Compounds
     三种齿轮油复剂的极压抗磨性能对比研究
短句来源
     Tribological Properties of Iron Aluminum Coatings Having Additive Compounds by High Velocity Arc Spraying
     高速电弧喷涂FeAl/Cr_3C_2复合涂层摩擦学特性
短句来源
     Effects of Additive Compounds on Tribological Properties of High Velocity Arc Sprayed Iron Aluminum Coatings
     增强相对高速电弧喷涂铁铝复合涂层摩擦学特性的影响
短句来源
     Through study on C-13 NMR and chemical analysis of Urea-Forma-ldehyde Concentrates (UFC), it is clearly shown that (1) UFC is a solution of formaldehyde, additive compounds of urea and formaldehyde, and prepolymer with low degree of polymerization and linkage of dimethylene ether (—CH_2OCH_2—), in which tri- and disubstituted urea are in the majority and tetra- is in the minority;
     通过对脲醛浓缩体(UFC)C-13 NMR谱的分析和化学分析,表明:(1)脲醛浓缩体是甲醛、尿素-甲醛加成物和低聚合度的预聚体的水溶液。 其聚合链节是二亚甲基醚(—CH_2OCH22—),主要组分是三取代、二取代尿素,此外还有少量的四取代尿素存在;
短句来源
更多       
  相似匹配句对
     Adjective Compounds
     妙解复合形容词
短句来源
     The additive of concrete
     浅谈混凝土外加剂
短句来源
     xS compounds.
     和Fe,_xs数量减少,向生成。
短句来源
     Friction-reducing and Antiwear Mechanism of N-containing Compounds as Lubricating Additive
     含氮化合物作为润滑油添加剂的抗磨减摩机理研究
     Critical Compressibility Factor of Organic Compounds Estimated by the Groug Additive Method
     基团加和法推算有机物临界压缩系数
短句来源
查询“additive compounds”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。
  additive compounds
An increase in the basicity of the additive compounds results in an increase in the constants for the formation of molecular complexes.
      
A thermochemical method has been used to estimate the compositions of additive compounds between PPTA polymer and sulfuric acid.
      
The uroprotective mechanism of mesna is based on the formation of nontoxic additive compounds with acrolein and 4-hydroxy-metabolites.
      
Four hindered amine light stabilisers, additive compounds, were used as thermal protector on polymer substrate.
      


The kinetic aspects and chain transfer processes of the stereospecific polymerization of butadiene initiated by catalyst systems consisting of nickel acetylacetonate and dialkyl aluminium chloride have been studied. It has been shown that the rate of polymerization is first order with respect to both monomer and nickel acetylacetonate concentrations, but second order with respect to the diisobutylaluminium chloride concentration. Thus the polymerization rate with diisobutylaluminuim chloride system is expressed...

The kinetic aspects and chain transfer processes of the stereospecific polymerization of butadiene initiated by catalyst systems consisting of nickel acetylacetonate and dialkyl aluminium chloride have been studied. It has been shown that the rate of polymerization is first order with respect to both monomer and nickel acetylacetonate concentrations, but second order with respect to the diisobutylaluminium chloride concentration. Thus the polymerization rate with diisobutylaluminuim chloride system is expressed as-dM/dt=k[M][NiA2][Al(i-C4H9)2Cl]2 When diethylaluminium chloride instead of diisobutylaluminium chloride is used, the rate of polymerization is 1/2 order in diethylaluminium chloride concentration, that is,-dM/dt=k[M][NiA2][Al(C2H5)2Cl]1/2 On the basis of these results, a possible polymerization mechanism of these two systems is proposed. The overall activation energy of polymerization has been determined to be 8.0±0.5 kcal/mole for the NiA2-Al(i-C4H9)2Cl system, and 8.9±0.5 kcal/mole for the NiA2-Al(C2H5)2Cl system. Effects of monomer concentration, catalyst concentration, conversion, solvent, and additive compounds on the polymer molecular weight were also studied. Variation of temperature from 0-35° has no significant effect on the molecular weight of polybutadiene obtained, indicating that the difference in activation energy, Ep-Et, is small. Values of chain transfer and termination constants are also presented. It appears that transfer to nickel-containing compound is the main chain transfer reaction in this system.

本工作研究了丁二烯在乙酰基丙酮镍-一氯二烷基铝体系中聚合的一般规律、聚合动力学及链转移过程。实验结果表明:聚合速率对单体浓度、主催化剂(镍络盐)浓度均呈一级关系,而对一氯二异丁基铝浓度呈二级关系,即 -(dM/dt)=k[M][NiA_2][Al(i-C_4H_9)_2Cl]~2对一氯二乙基铝浓度则呈1/2级关系,即 -(dM/dt)=k[M][NiA_2][Al(C_2H_5)_2Cl]~(1/2)对这二种体系反应级数的不同作了解释。 实验测得丁二烯在乙酰基丙酮镍-一氯二异丁基铝体系中聚合的总活化能为8.0±0.5千卡/克分子,而在一氯二乙基铝体系中为 8.9±0.5千卡/克分子。 研究了丁二烯在本体系中聚合时单体浓度、主助催化剂浓度、聚合转化率、溶剂以及某些添加剂等因素对聚合物分子量的影响。结果表明:聚合物的分子量随单体浓度的增大而增大;随镍组份浓度的增大而减小;当体系中水分含量很低时,一氯二乙基铝浓度的改变对聚合物分子量基本无影响;在5—60%转化率及0—35℃范围内聚合物分子量变化不明显;庚烷中所得聚合物的分子量比苯中所得者低;添加水、吡啶、三溴化铝、三乙基铝、甲基环己烷及蒽等都不能显著提高聚合物的分...

本工作研究了丁二烯在乙酰基丙酮镍-一氯二烷基铝体系中聚合的一般规律、聚合动力学及链转移过程。实验结果表明:聚合速率对单体浓度、主催化剂(镍络盐)浓度均呈一级关系,而对一氯二异丁基铝浓度呈二级关系,即 -(dM/dt)=k[M][NiA_2][Al(i-C_4H_9)_2Cl]~2对一氯二乙基铝浓度则呈1/2级关系,即 -(dM/dt)=k[M][NiA_2][Al(C_2H_5)_2Cl]~(1/2)对这二种体系反应级数的不同作了解释。 实验测得丁二烯在乙酰基丙酮镍-一氯二异丁基铝体系中聚合的总活化能为8.0±0.5千卡/克分子,而在一氯二乙基铝体系中为 8.9±0.5千卡/克分子。 研究了丁二烯在本体系中聚合时单体浓度、主助催化剂浓度、聚合转化率、溶剂以及某些添加剂等因素对聚合物分子量的影响。结果表明:聚合物的分子量随单体浓度的增大而增大;随镍组份浓度的增大而减小;当体系中水分含量很低时,一氯二乙基铝浓度的改变对聚合物分子量基本无影响;在5—60%转化率及0—35℃范围内聚合物分子量变化不明显;庚烷中所得聚合物的分子量比苯中所得者低;添加水、吡啶、三溴化铝、三乙基铝、甲基环己烷及蒽等都不能显著提高聚合物的分子量。 计算链转移常数,得到对含镍组份为 84,对单体为 1.9× 10~(-3),终止常数为 2.3×10~(-3)。因而得知本体系中主要的链转移过程是?

The investigation on the molecular weigth and its distribution of 1,2-polybuta-diene prepared with MoCl4OR-i-Bu2AlORn catalyst system has been performed by viscosity and GPC methods and the way for regulation of the molecular weight and distribution has been searched. 1,2-polybutadiene with Mw/Mn = 1.2-2.0 can be prepared with MoCL4OR-i-Bu2AlOR' catalyst system at 30-70℃. There is a linear relation between the Mw/Mn and polymerization temperature. It was found by extrapolating that this catalyst system can possibly...

The investigation on the molecular weigth and its distribution of 1,2-polybuta-diene prepared with MoCl4OR-i-Bu2AlORn catalyst system has been performed by viscosity and GPC methods and the way for regulation of the molecular weight and distribution has been searched. 1,2-polybutadiene with Mw/Mn = 1.2-2.0 can be prepared with MoCL4OR-i-Bu2AlOR' catalyst system at 30-70℃. There is a linear relation between the Mw/Mn and polymerization temperature. It was found by extrapolating that this catalyst system can possibly initiate living polymerization at about - 18℃. The molecular weigth and its distribution can be regulated by polymerization temperature or presence of polar additive compounds. Allyl halides are very effective for this purpose and allyl iodide is the best.

本文用粘度法和GPC法研究了MoCl_4R-i-Bu_2AlOR′催化体系合成的聚1,2-丁二烯的分子量及其分布,发现该体系聚合物分子量分布非常窄,且与聚合温度呈直线关系;利用外推法估计,在-18℃左右该体系有可能引发活性聚合。聚合温度为30—70℃时,聚合物分子量分布宽度指数为1.5—2.0。本文还研究了调节聚合物分子量及其分布的方法,发现烯丙基卤可以大幅度调节聚合物分子量,对分子量分布也有一定的调节作用,其中烯丙基碘的效果最好。

Through study on C-13 NMR and chemical analysis of Urea-Forma-ldehyde Concentrates (UFC), it is clearly shown that (1) UFC is a solution of formaldehyde, additive compounds of urea and formaldehyde, and prepolymer with low degree of polymerization and linkage of dimethylene ether (—CH_2OCH_2—), in which tri- and disubstituted urea are in the majority and tetra- is in the minority; (2) C-13 NMR of UFC supplies a quantitative determination to agree with that of chemical analysis, and more information about...

Through study on C-13 NMR and chemical analysis of Urea-Forma-ldehyde Concentrates (UFC), it is clearly shown that (1) UFC is a solution of formaldehyde, additive compounds of urea and formaldehyde, and prepolymer with low degree of polymerization and linkage of dimethylene ether (—CH_2OCH_2—), in which tri- and disubstituted urea are in the majority and tetra- is in the minority; (2) C-13 NMR of UFC supplies a quantitative determination to agree with that of chemical analysis, and more information about the constitution of UFC than it.

通过对脲醛浓缩体(UFC)C-13 NMR谱的分析和化学分析,表明:(1)脲醛浓缩体是甲醛、尿素-甲醛加成物和低聚合度的预聚体的水溶液。其聚合链节是二亚甲基醚(—CH_2OCH22—),主要组分是三取代、二取代尿素,此外还有少量的四取代尿素存在;(2)脲醛浓缩体的C-13 NMR分析和化学分析的结果是一致的,而且C-13 NMR分析可以提供更详细的结构信息。

 
<< 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additive compounds的内容
在知识搜索中查有关additive compounds的内容
在数字搜索中查有关additive compounds的内容
在概念知识元中查有关additive compounds的内容
在学术趋势中查有关additive compounds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