查询词典 ether

All the complex series based on 4',4''-dicarboxy-1,6-diphenoxyhex- ane (C6-2COOH) and 4',4''-dicarboxy-1,10-diphenoxydecane (C10-2COOH) possessed higher melting and clearing points, usually showed soft crystal or crystalline smectic phases and crystal polymorphs except C10-2COOH/ p -PhBPy complex displaying also an enantiotropic nematic phase, while the complexes based on 4,4'-dicarboxy-α,ω-diphenoxy tetraethyleneglycol ether (C8O4-2COOH) with a longer flexible spacer exhibited monotropic fluidic smectic SmA and/or nematic phases.

研究表明，分别具有较短的6或10个亚甲基的烷烃间隔基的双苯甲酸衍生物4'，4''-二羧酸-1，6-二酚氧基己烷(C6-2COOH)和4'，4''-二羧酸-1，10-二酚氧基癸烷(C10-2COOH)的系列复合物具有较高的熔点和清亮点，一般都只出现结晶近晶相和多晶型转变现象。

The first part reports some new reactions of BNAH, especially the reductive cyclizations of some activated ethylenic compounds to five-membered carbocycles and a sevenmembered enolic ether ring, both of which may be useful in related areas.

详细论文的研究对象是重要的辅酶NADH的化学模型1-苄基-1，4-二氢烟酰胺。论文包括一个对近期该领域进展的综述和三部分工作。

Tritici with MICs as 80 and 150μg/ml . The MICs of a main secondary metabolite of YS 4108, 3-methylphenol ether against Candida albicans, Tricophyton rubrum, Epidermophyton floccosum, Cunninghaghmella elegans and Aspergillus niger were 10, 30, 20, 20 and 50μg/ml, respectively.

来源于海洋真菌YS 4108的一个甲基酚醚表现出对白色念珠菌、红色毛癣菌、絮状表皮癣菌、雅致小克银汉菌和黑曲霉等五株人类病原真菌的良好抗菌活性，MIC分别为10、30、20、20和50μg／ml。

Taking the rates of ethanal and ether extracts,as well as essential oil as indexes,qualtities of Bunge pricklyash from 10 major production areas were evaluated by comprehensive multi-index comparison method.

以醇溶抽提物、不挥发性乙醚抽提物和挥发油含量为指标，应用多指标综合排序方法对全国10个主产地花椒品质优劣进行排序；应用因子分析方法，对影响花椒品质的环境因子进行分析。

Taking the rates of ethanal and ether extracts ,as well as essential oil as indexes,qualtities of Bunge pricklyash from 10 major production areas were evaluated by comprehensive multiindex comparison method.

以醇溶抽提物、不挥发性乙醚抽提物和挥发油含量为指标，应用多指标综合排序方法对全国10个主产地花椒品质优劣进行排序；应用因子分析方法，对影响花椒品质的环境因子进行分析。

Methhods:1:The chemical components of Chinese herbal medicines extracted with petroleum ether,chloroform, ethyl acetate,ethenol and water respectively were analyzed and compared.2.The specimens were analyzed with ultraviolet-visible absorption spectrophotometry.

(1)按中药多分子体系的脂溶性差异，分为石油醚、氯仿、乙酸乙脂、乙醇和水的溶出性成分集合，然后进行&对药&与非&对药&的对比分析；(2)用紫外-可见光光度计测定吸收光谱曲线。

Then,the core molecule was used as a coupling agent to condensate with polyethylene glycolsof different molecular weight or polyethylene glycol monomethyl etherin the presence of stannous octoate as catalyst and diphenyl ether as azeotropic agent to remove water.

在辛酸亚锡催化下，以二苯醚为共沸脱水剂，将三官能度小分子TMP-SK3作为偶联剂，进一步与不同分子量的端羟基聚乙二醇和聚乙二醇单甲醚缩合，减压下共沸脱水，制备了以TMP-SK3为核，PEG或PEGm为臂的三臂星形大分子。

9H2O, and niobium ethoxide Nb(OC2H5)5 as starting materials, ethylene glycol monomethyl ether (C3H8O2) as the solvent. 0.1BiFeO3-0.9SrBi2Nb2O9 thin films were prepared on fused quartz substrates using sol-gel processing.

9H2O和乙醇铌[Nb(OC2H5)5]作为起始原料，乙二醇甲醚[C3H8O2]作为溶剂配制掺Fe的SrBi2Nb2O9前驱体溶液，利用溶胶－凝胶法在石英衬底上制备出0.1BiFeO3-0.9SrBi2Nb2O9铁电薄膜。

In the presence of alkalinity and tetraethyl ammonium bromide, 2,4-dihydroxy benzophenone reacts with allyl glycidyl ether to form an ethylenic derivative of benzophenone, 2-hydroxy-4-(β-hydroxy-γ-allyloxy) propyloxy benzophenone, which can further undergo hydrosilylation with polyhydromethylsiloxane.

在相转移催化剂四乙基溴化按作用下，利用2，4-二羟基二苯甲酮与烯丙基缩水甘油醚在碱性水溶液中的开环加成反应，合成了中间体4-丙氧基－2-羟基二苯甲酮，将其进一步与聚甲基氢硅氧烷进行硅氢化加成反应。

The root of Leptopus Chinensis Pojark, belonging to Euphorbiaceae, was extracted with petroleum ether, chloroform and methyl alcohol by different methods. Insecticidal activitives of crude extracts and fractions against Plutella xylostella were tested, and its effects on activities of several enzymes from the pest were evaluated.

本研究以大戟科植物雀儿舌头为实验材料，用多种有机溶剂和不同提取方法对雀儿舌头的根进行抽提，用抽提物及其萃取物分别对危害蔬菜的重要害虫--小菜蛾进行了生物活性测定及几种酶活性的影响，实验结果如下： 1。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。