propylene glycol 2丙二醇(8) 2丙二醇(1)   2丙二醇      With n(potassium dichromate)∶n(sulfuric acid)∶n(1,2 propanediol)=1 0∶4 0∶(1 5-2 5),1,2 propylene glycol was oxidized with acidic aqueous potassium dichromate solution at 60-70 ℃ by bubbling nitrogen and adding the materials for 1 5 h while the solution was distilled.      n(重铬酸钾 )∶n(硫酸 )∶n(1,2 丙二醇 ) =1 0∶4 0∶(1 5～ 2 5 ) ,以水为溶剂 ,在 6 0～ 70℃间歇通入氮气 1 5h ,边加原料边蒸馏 ,制得产率为5 0 %的丙酮醛。 短句来源      Solid-Liquid Equilibrium for NaCl+2 Propanol (or 1,2 Propylene glycol、or Glycol)+Water Systems      NaCl+异丙醇(或1,2丙二醇、或丙三醇)+水体系的固液平衡 短句来源      The synthetic conditions of the malate B with the solid superacid SO 2- 4/TiO 2 MoO 3 as a polyphase catalyst and with ethyl acetoacetate and 1,2 propylene glycol as feed stocks were studied .      以固体超强酸SO2 -4/TiO2 MoO3 为多相催化剂 ,对以乙酰乙酸乙酯和 1,2 丙二醇为原料合成苹果酸酯 B的反应条件进行了研究。 短句来源      The restrain effect of cryoprotective agents on eutectic is different. The best is glycerol and then is ethylene glycol, DMSO,1,2 propylene glycol and 1,3 butanediol respectively.      不同种类保护剂的抑制共晶的能力从强到弱依次是甘油、乙二醇、 DMSO、 1,2 丙二醇和1,3丁二醇。 短句来源      The freezing point of the system of NaCl+2 Propanol(or 1,2 Propylene glycol、or Glycol)+Water at normal pressure have been determined with the freezing point apparatus.      本文测定了常压下NaCl＋异丙醇（或1，2丙二醇、或丙三醇）＋水体系的凝固温度。 短句来源 更多          2丙二醇      Propylene carbonate,water and 1,2 propylene glycol in the rectifying products from the synthesis of propylene carbonate were determined by GC with TCD,the analysis were seperated at 180℃ on a 1m×3mm stainless steel column packed with silanized 102 white support coated with polydiethylene glycol succinate.      采用气相色谱法测定合成碳酸丙烯酯产物中碳酸丙烯酯、水和1，2丙二醇等杂质含量。 在检测器TCD、180℃、填充有聚二乙二醇丁二酸酯涂渍的硅烷化102白色担体的不锈钢填充柱上，样品中的组分获得分离。 短句来源   “2 propylene glycol”译为未确定词的双语例句      THE METABOLISM OF 1,2 PROPYLENE GLYCOL DINITRATE (PGDN) IN VITRO      丙二醇二硝酸酯的体外代谢 短句来源      Ketals of ethyl acetoacetate with ethandiol and 1,2 propylene glycol were synthesized by dealuminated ultrastable Y zeolite catalysts, the yield was 80% for ethandiol and 92% for 1,2 propylene glycol.      用脱铝超稳Y 沸石作催化剂合成了乙酰乙酸乙酯与乙二醇缩酮和丙二醇缩酮 ,其产率可达到 80 %和 96 % . 短句来源 查询“2 propylene glycol”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 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。   propylene glycol Long time stability of the HMBA CrV complex in I.2 propylene glycol solution is investigated. 例句来源       The cell is filled with 1,2-propylene glycol, whose viscosity is 40 times larger than that of water. 例句来源       The cell is filled with 1,2-propylene glycol, which is 40 times more viscous than water. 例句来源       The NMR spectra of the hybrid materials O and X were referenced to those recorded for 1,2propylene glycol. 例句来源                The castor oil base brake fluid has been found unable to meet the present-day requirements both in its performances and resource.This paper discusses the feasibility of using alkylene oxide polyethers as the lubricant base of brake fluid to replace castor oil. It aslo explores the possibility of utilizing polytriols of different molecular weight range by use of propylene glycol.The technical performances of the new brake fluid ZSM41 as such is said to equal and partly exceed the conventional SY ...             蓖麻油润滑基车用制动液其性能和来源均不能满足当前要求,本文论述了以氧化烯烃聚醇醚代替蓖麻油用作制动液润滑基并讨论了应用丙二醇以扩大使用不同分子量范围的三羟型聚醇醚,由此而制得的ZSM41车用制功液,其性能达到并超过原醇型制动液石油部标准SY2913—77。 文摘来源          The polyesters with terminal hydroxyl groups were prepared by condensation polymerization of adipic acid with 1,4-butanediol or ethylene glycol and, in some cases, a little amount of propylene glycol. The polyurethane thermoplastics were then prepared with the polyester, 4,4'-diphenylmethane diisocyanate and 1,4-butanediol. It was found that the NCO/OH ratio in the thermoplastics and the molecular weight of the polyester show apparent effects on the physical and mechanical properties of th...             采用己二酸、乙二醇(或加入少量1,2-丙二醇)和1,4-丁二醇制备了端羟基聚酯,并用该聚酯和4,4’-二苯基甲烷二异氰酸酯(MDI)、1,4-丁二醇制备了聚酯型热塑性聚氨酯;考察了NCO/OH值、聚酯分子量等因素对热塑性聚氨酯的物理机械性能的影响。结果表明,NCO/OH值和聚酯分子量是影响热塑性聚氨酯物理机械性能最重要的因素。 文摘来源          Both rivanol solution and the mixture of rivanol, glycerol, and propylene glycol were injected into the peritoneal cavities of the female rabbits. There were not significant difference on SGPT and BuN in the rabbits before and after given both rivanol preparations (40mg/kg). The livers and kidneies didn't occur significantly pathological change than control. Rivanol intraperitoneal injection may not impair the liver and kidney. When intrauterine rivanol used for termination of early pregnancy en...             两种利凡诺(40mg/kg)制剂(“水剂”和“合剂”)雌兔腹腔注射,72h后的SGPT和BUN与用药前比较,均无显著差异(P>0.05);肝肾组织亦无明显病理改变。腹腔内大剂量利凡诺并不明显引起肝肾功能和形态损害。如利凡诺“合剂”用于宫腔内抗早孕时,即使利凡诺完全进入腹腔内也还是安全的 文摘来源   << 更多相关文摘         相关查询: 2-propylene glycol propylene glycol propylene glycol ethers propylene glycol polyether propylene glycol alginate poly (propylene glycol glycol dipropionate propylene 2-propylene propylene glycol (pg) propylene glycol monostearate propylene glycol ether 12 propylene glycol  对查询结果不满意

CNKI小工具 在Springer中查有关的英文论文 在知识搜索中查有关2 propylene glycol的内容 在数字搜索中查有关2 propylene glycol的内容 在概念知识元中查有关2 propylene glycol的内容 在学术趋势中查有关2 propylene glycol 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

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  2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社