查询词典 methyl salicylate

This article compares methyl benzotriazole with benzotriazole in terms of their performance of anticorrosion, anti-corrosion efficiency in different pH condition, thermal stability and chlorine resistance.

比较了甲基苯三唑与苯三唑的缓蚀性能，不同pH值条件下的缓蚀效率、热稳定性和抗氯性能。

The eight VOCs were acetophenone, phenol, benzotrichloride, 1, 3-butadiene, chlorobenzene, methanol, methyl chloroform and methylene chloride. They were mixed together with very low concentrations.

所测定的八种VOCs为苯乙酮，苯酚，三氯甲苯，1，3丁二烯，氯苯，甲醇，三氯代乙烷和二氯甲烷。

The results of bioassay suggest that 2-methylthio-6-methyl-4-substituted pyrimidine and 4, 6-dimethoxy-2-substituted pyrimidine derivatives show herbicidal activity. In these target compounds, 4, 6-dimethoxy-2-substituted pyrimidine benzylamine and 4, 6-dimethoxy-2-Substituted pyrimidine benzylidene amine exhibit good herbicidal activity, and the herbicidal will be affected by the substituents in the benzene ring.

对分子库中的目标分子进行了生物活性筛选研究，发现其中的2-甲硫基-6-甲基-4-取代嘧啶衍生物和4，6-二甲氧基-2-取代嘧啶类化合物显示出除草活性，其中4，6-二甲氧基-2-取代嘧啶苄胺类化合物和4，6-二甲氧基-2-取代嘧啶亚苄胺类化合物具有较好的除草活性，而且其活性和苯环上的取代基有关。

Bromination occur s selectively on the PMS methyl group, providing a reactive benzylic bromine functionality which is the key to Exxpro specialty elastomers′ vulcanization and modification versatility.

溴化反应选择性地发生在PMS的甲基基团上，提供活性苄基溴官能团，这也是Exxpro特种弹性体硫化和各种改性的关键。

Bromination occurs selectively on the PMS methyl group, providing a reactive benzylic bromine functionality which is the key to Exxpro specialty elastomers′ vulcanization and modification versatility.

溴化反应选择性地发生在PMS的甲基基团上，提供活性苄基溴官能团，这也是Exxpro特种弹性体硫化和各种改性的关键。

Direct competitions of intramolecular C - H insertions into benzylic C - H and 4-nitroor 4-methoxy substituted benzylic C - H of methyl 2-diazo-3-oxo-6-(4-substituted phenyl)-4-(2-phenylethyl)hexanoate 44a and 44b catalyzed by Rh-mediated carbenoid were alsoinvestigated, and the relative reactivities obtained by compound 44a or 44b were comparableto those obtained by indirect method.

此外，还研究了Rh催化分解下，对位硝基取代或甲氧基取代的4-(2-苯基乙基)-6-(4-取代苯基)-2-重氮基-3-氧代己酸甲酯44a、44b苯甲位C-H插入反应的相对速率，与化合物47a和47f得到的结果比较，数据平行。

Therelative rates of the Rh-mediated carbenoid insertion into the benzylic C - H bonds of aseries of para-substituted phenyl substrates: methyl 2-diazo-3-oxo-6-(4-substituted phenyl)-4-propylhexanoate 47a - g, have been measured by an indirect intramolecular competitionmethod under the condition in which the possible steric and conformational effects have beenminimized.

为了将立体因素和构象因素最大程度减小，以便较为准确地评价电子效应对该反应的影响，设计并合成了不同对位取代基的化合物4-丙基-6-(4-取代苯基)-2-重氮基-3-氧代己酸甲酯47a-g，并研究了它们在不同Rh催化剂作用下的分子内C-H插入反应。

ConclusionThe main components of liposoluble components are D-Limonene,-3,7-dimethyl-1,3,6-Octatriene,-2,6-dimethyl-2,4,6-Octatriene, Caryophyllene, 2,6-dimethyl-6-(4-methyl-3-pentenyl)-Bicyclo［3.1.1］hept-2-ene, alpha-Farnesene, and-2,6,10,15,19,23-hexamethyl-2,6,10,14,18,22-Tetracosahexaene.

结论蹄叶橐吾的脂溶性成分主要为D-柠檬烯（2.98%）、-3，7-二甲基-1，3，6-辛三烯（15.07%）、-2，6-二甲基-2，4，6-辛三烯（3.61%）、石竹烯（3.62%）、2，6-二甲基-6-(4-甲基-3-戊烯)-二环［3.1.1］庚-2-烯（6.20%）、α-法呢烯（4.09%）、反式角鲨烯（26.91%）等。

The asymmetric polymerization of methyl methacrylate is carried out using the chiral binaphthyl crown ether macrocyclic compounds binding n-BuLi or t-BuOK as chiral initiator at -78℃.

以手性联萘冠醚为配体，络合n-BuLi，t-BuOK等有机金属化合物形成手性引发剂体系，初步探讨了甲基丙烯酸甲酯单体的聚合反应。

Three kinds of CpTiCl had been synthesized when was catechol , 2, 2′-biphenol , or 2, 2′-binaphthol , respectively. In the case of CpTiCl〓, was 8-hydroxylquinoline , 2-methyl-8-hydroxyl-quinoline , and 8hydroxyl-5-nitro-quinoline , respectively.

研究表明，这三类半茂钛配合物在助催化剂MAO作用下，于30℃、0.1MPa乙烯压力下均可催化乙烯聚合，并显示较高的活性，远高于未引入非茂配体的CpTiCl〓及不含茂环的相应非茂配合物的活性，这说明同时含一个茂配体和一个非茂配体的半茂配合物是烯烃聚合的优良催化剂。

It also analyzes the feature and development of semi-finish grinding and finish grinding by roller press.

同时进行了辊压机半终粉磨和终粉磨系统的特点和发展分析。

When I got there, water was dripping slowly from the ceiling and forming a pool on the floor.

当我到那里的时候，水是慢慢地从天花板滴而且形成在地板上的一个池。