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
   boron modified 的翻译结果: 查询用时:0.01秒
图标索引 在分类学科中查询
所有学科
有机化工
轻工业手工业
更多类别查询

图标索引 历史查询
 

boron modified
相关语句
  硼改性
     The structures of aluminium modified silica sol(AMS) and boron modified silica sol(BMS) were investigated with IR,()~(29)Si-NMR、()~(11)B-NMR,()~(27)Al-NMR spectra and TEM(transmission electron microscopy) for the first time.
     用IR谱2、9Si-NMR1、1B-NMR和27Al-NMR谱及透射电镜对铝改性硅溶胶与硼改性硅溶胶进行了结构形态与特征的分析研究,首次提出了铝改性硅溶胶与硼改性硅溶胶的结构和形态特征。
短句来源
     The relationship between glass fiber(GF) content and thermal properties and mechanical properties of glass fiber reinforced boron modified phenolic resin(GF/BPR) composites were studied.
     研究了玻璃纤维(GF)含量对玻璃纤维增强硼改性酚醛树脂(GF/BPR)复合材料力学性能、耐热性能的影响.
短句来源
     In this paper, boron phenolic resin/nano-SiO_2 composite was synthesized in-situ technique based on the preparation of phenolic resin and boron modified phenolic resin.
     本文在制备纯酚醛树脂和硼改性酚醛树脂的基础上采用原位聚合法合成了硼酚醛/SiO_2纳米复合材料。
短句来源
     Effect of catalyst content,reaction time and temperature on synthesis of boron modified phenolic resin was investigated and the relationship between mechanical properties of carbon fiber reinforced boron modified phenolic resin(CF/BPR) composites and carbon fiber(CF) content and surface treatment were studied.
     从催化剂用量、反应时间和温度等方面研究了合成工艺条件对硼改性酚醛树脂(BPR)性能的影响,研究了碳纤维/硼改性酚醛树脂(CF/BPR)复合材料性能与碳纤维含量及其表面处理的关系.
短句来源
     When the pH value of cationic starch boron modified silica sol particulate retention and drainage system was between 4 and 8 and the dosage of aluminum sulfate was≤3% in the colophony sizing system the result was the best. The electrolyte disturbance resistance performance of the cationic starch / boron modified silica sol particulate retention and drainage system was desirable.
     阳离子淀粉/硼改性硅溶胶微粒助留助滤体系在pH值4~8时,以及在松香施胶体系中硫酸铝用量≤3%时较为适用,该体系抗电解质干扰能力强。
短句来源
更多       
  “boron modified”译为未确定词的双语例句
     Four hydrotreating catalysts with same Ni-W content were prepared by using various supports includingγ-Al_2O_3,boron modifiedγ-Al_2O_3,fluorine modifiedγ-Al_2O_3 and SiO_2-Al_2O_3/γ-Al_2O_3.The prepared catalysts were characterized by temperature programmed reduction(TPR) technique to observe the interaction between Ni-W and supports.
     以γ-Al_2O_3、B改性的γ-Al_2O_3、F改性的γ-Al_2O_3、SiO_2-Al_2O_3为载体制备Ni、W含量相同的四种催化剂,通过程序升温还原表征考察活性金属与不同载体的相互作用。
短句来源
     The melt spinning process of the boron modified M2 high-speed steel-M2+1.1B,M2+ 1.5B and M2+2.0B,is discussed in this paper.
     采用单辊平面流铸工艺成功地制取了加硼高速钢M2+1.1B、M2+1.5B、M2+2.0B的急冷条带。
短句来源
     The conversion of toluene and the selectivity of p-ethyltolnene on boron modified ZSM-5 zeolite catalyst were 22.90% and 98.00% respectively.
     其中用单一硼离子改性的ZSM-5沸石催化剂,甲苯转化率可达22.90%,对甲乙苯选择性为98%。
短句来源
     ALLYL RESIN CONTAINING BORON MODIFIED BMI RESIN
     含硼烯丙基树脂改性BMI树脂
短句来源
     Boron isotope compositions of the chambersite ore δ 11 B range from +6 7‰ to +14 9‰, with values in the chambersite dominant eastern part of the deposit lower than those in the diallogite rich western area. These values are consistent with a seawater source for the boron, modified by evaporation and hydrothermal activity.
     首次研究了该硼矿床锰方硼石的硼同位素组成 ,δ11B值为 +6 7‰~ +14 9‰ ,均为正值 ,并且东部大峪矿段的硼同位素值低于西部柏树沟矿段的硼同位素值 ,表明该硼矿床的成矿元素属于海水来源。
短句来源
更多       
  相似匹配句对
     of modified P.R.
     R.
短句来源
     Synthesis of Phenolic Resin Modified with Boron
     硼改性酚醛树脂的合成
短句来源
     Synthesis of Boron-modified Phenolic Resin
     耐高温耐烧灼热固性硼酚醛树脂的合成
短句来源
     The modified formulas of J.
     为了消除质量干扰离子的影响,导出两个对J.
短句来源
     Distribution of Boron in Soil
     土壤中硼的分布
短句来源
查询“boron modified”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。
  boron modified
Si-B-C-N ceramics were synthesized from boron modified poly(vinyl)silazanes with the chemical formula (B[C2H4-Si(CH3)NH]3)n.
      
Hydrolytic cleavage of epoxy ring during the epoxidation of alkenes over boron modified titanium silicalites of MFI topology
      
Transfer hydrogenation of phenanthrene in the presence of boron modified alumina or silica-alumina
      
Boron modified Co/Al2O3 catalysts, previously characterized by ESCA, are examined by EXAFS.
      
Application of cross-correlation analysis to EXAFS: Investigation of the cobalt phase on boron modified cobalt/alumina catalysts
      
更多          


The authors synthesized a new boron modified phenolic resin (named Presin) whose decomposition is started from 461℃, with the residue being 63% at700℃. Blending the P-resin with NBR as a matrix and using glass fiber as a reinforcement, a series of high friction factor material was made. The formulation, technological process and composite mechanism of the friction materials were also studied systematically. The results show that NBR at the level of 4~7% in 33% matrix gives a good toughness effect and comprehensive...

The authors synthesized a new boron modified phenolic resin (named Presin) whose decomposition is started from 461℃, with the residue being 63% at700℃. Blending the P-resin with NBR as a matrix and using glass fiber as a reinforcement, a series of high friction factor material was made. The formulation, technological process and composite mechanism of the friction materials were also studied systematically. The results show that NBR at the level of 4~7% in 33% matrix gives a good toughness effect and comprehensive properties. Thus, a 21% glass fiber non-asbestos friction material of clutch lining was prepared, its properties all meet the GB national standards and will be developed industrially.

本文选用热分解温度为461℃,700℃时残留物为63%的硼改性酚醛(P树脂)与丁腈橡胶共混后作为基体,以玻璃纤维作增强剂。对该体系制成的摩阻材料进行了配方、制备工艺及复合机理等较系统的研究。结果表明,在33%基体含量中,丁腈橡胶占4~7%时具有良好的增韧性及其它综合性能。含21%玻璃纤维的无石棉摩阻材料离合器片,其性能已符合国家标准,可以进行扩大生产。

The alkylation reaction of toluene with propylene on boron-modified montmorillonites was carried out in a fixed-bed flow micro-reactor at atmospheric pressure. The effect of operating conditions on alkylation was investigated. The influences of boron-modification on the structure and surface acidity of montmorillonite were also examined by XRD, BET adsorption and TPD. The results indicate that the selectivity for ortho-and para-position alkylation is very high with very little by products....

The alkylation reaction of toluene with propylene on boron-modified montmorillonites was carried out in a fixed-bed flow micro-reactor at atmospheric pressure. The effect of operating conditions on alkylation was investigated. The influences of boron-modification on the structure and surface acidity of montmorillonite were also examined by XRD, BET adsorption and TPD. The results indicate that the selectivity for ortho-and para-position alkylation is very high with very little by products. Boron-modification reduces the d-spacing of montmorillonite, decreases the specific surface area, weakens the strong acid and enhances the weak acid slightly. The acid amount of type (Ⅰ) acid sites increases with B_2O_3 content, and parallels to the alkylation activity. When the reaction was carried out on 15m% B_2O_3/montmorillonite at 100℃, the toluene conversion was the highest.

本文采用常压固定床积分反应器进行了甲苯和丙烯在硼改性蒙脱土催化剂上的烷基化.考察了工艺条件对反应的影响,并采用X射线粉末衍射、BET比表面测定、氨吸附程序升温脱附等测试方法探讨了硼改性对蒙脱土结构和表面酸性的影响。结果表明,甲苯丙烯烷基化的邻对位选择性很高,副产物极少。硼的改性使蒙脱土层状结构的层间距缩小,比表面下降;强酸减弱,弱酸略增强。Ⅰ类酸位的酸量随B_2O_3含量的增加而增加,并与烷基化活性成平行关系,该反应在100℃和15m%B_2O_3/蒙脱土催化剂上的活性最大。

The effect on alkylation of WHSV and N_2/ (toluene + ethanol)(tool)with HZSM5 zeolite catalyst at temperature 340℃ and unit toluene/ethanol tool ratio was investigated. A new optimization method of selecting reaction condition was presented. The alkylation of toluene with ethanol on B, La, P, B-La modified ZSM-5 zeolite catalysts gave good results. The conversion of toluene and the selectivity of p-ethyltolnene on boron modified ZSM-5 zeolite catalyst were 22.90% and 98.00% respectively.

采用HZSM-5沸石催化剂,在反应温度为340℃、甲苯/乙醇摩尔比为1的条件下,考察了空速、N_2/(甲苯+乙醇)摩尔比对烷基化反应的影响。提出了一种筛选反应条件的优化方法。通过用B、La、P、B-La单双离子改性的ZSM-5沸石催化剂进行甲苯/乙醇烷基化反应,都得到了较理想的反应结果。其中用单一硼离子改性的ZSM-5沸石催化剂,甲苯转化率可达22.90%,对甲乙苯选择性为98%。

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