查询词典 benzene

Research on thermodynamics and kinetics of pyrolysis reaction mechanism Kinetic and thermodynaimic research of the pyrolysis reaction mechanism of toluene was conducted at different temperature range 298-1223K. The result shows that the pyrolysis reaction firstly occurs at the methyl on the benzene ring, and produces benzyl.

裂解机理的热力学与动力学研究在298K-1223K的温度范围内对甲苯热解机理的热力学和动力学研究结果表明，热解首先发生在苯环甲基C-H键上并生成卞基自由基，主要产物为联二甲苯，反应的活化能ΔE〓=402.27kJ/mol。

Meldrum is a carboxyl-phthalocyanine weak resistance agent, with the activity of this enzyme metal ion (Mg2 + Mg2 +) formed fairly stable chelate, and its derivatives benzene methyl malonic acid is a strong resistance agent.

丙二酸是一个羧基酞酶的弱阻化剂，它与这种酶的活性金属离子(镁离子Mg2+)形成相当稳定的螯合物，而它的衍生物苯甲基丙二酸则是一个强阻化剂。

At last, the experimental results show that the prediction correct rate for 50 unknown samples of gaseous Dimethyl Methyl Phosphonate, Dimethyl Benzene, Sarin, Soman and Phosgene is 98%, and the maximum relative measuring errors of gaseous DMMP and gaseous DMB are 3%.

实验结果表明，本系统对气态甲基磷酸二甲酯与气态二甲苯两种毒气模拟品和沙林、梭曼与光气三种毒气共50 个未知样本预测识别的正确率为98%，两种毒气模拟品的最大相对测量误差为3%。

Dichloro-2 pyridine azo-2,4 diamine methyl benzene is used as the developer for cobalt in determination of trace cobalt in iron ore.

应用5—［（3，5—二氯—2—吡啶）偶氮］—2，4—二氨基甲苯作钴的显色剂测定铁矿石中的微量钴，最大吸收峰位于波长590nm处，摩尔吸光系数为1。

A type of modified methyl benzene sulfonic acid sodium salt was synthesized by Friedel-Crafts reaction,knoevenagel reaction and sulfonation reaction with methyl benzol as row material.

以甲基苯为初始反应物，通过付-克反应，knoevenagel反应，磺化反应，最后合成一种改性甲基苯磺酸钠。

The mechanisms responsible for synergism between alkyl benzene sulfonate and methyl oleate in surfactant/brine/model oil and surfactant/alkali/model oil systems were studied.

摘要研究了表面活性剂／盐／模拟油体系与表面活性剂／碱／模拟油体系中油酸甲醴与表面活性剂协同效应机理。

Oil in the redeployment of high-octane fuel components, blending the best choice programs, such as redeployment isooctane, cumene, alkyl benzene, methyl tert-butyl ether, alcohol burning Materials.

在油品中调入高辛烷值燃料的组分，选择最佳调合方案，如调入异辛烷、异丙苯、烷基苯、甲基叔丁基醚、醇类燃料等。

The methyl benzene Mi Shi is as effective as nematode to the tapeworm, Rao insect, hookworm and whip insect.

甲苯咪唑对蛔虫、蛲虫、钩虫、鞭虫和线虫有效。

The synthetic liquid fuel is compounded with basic material including methanol and ethanol as well as additives including stearic acid, peroxide of oil and grease, potassium chlorate, zinc peroxide, methyl benzene, methane, cyclohexane, etc.

本发明是一种合成液体燃料及其生产方法，这种燃料由基料甲醇、乙醇和硬脂酸、过氧油脂、氯酸钾、过氧化锌、甲苯、甲烷、环已烷等添加剂经混合加热反应配制而成。

This study investigated the biodegradation of benzene in laboratory anaerobic microcosms.

但是，苯—溶解度大且为致癌物，在厌氧条件下，特别是反硝化条件下的生物降解仍是一个有争议的问题，限制了生物恢复技术的应用。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。