苯环

From the reaction mechanism, which involved formation of benzodiazepinium ethoxycarbonylmethylate, the reaction mechanism, which involved formation of benzodiazepinium ethoxycarbonyl- methylate followed by cycloaddition reaction, was tentatively proposed.

通过研究反应过程中分离出的副产物反丁烯酸二乙酯III和4，5-二氢吡唑-3，4，5-三羧酸乙酯IV，初步提出了反应经过乙氧羰基甲基化苯并二氮杂卓翁中间体V再发生环加成反应的机制。

Methylnaphthalene ratio anti Methylnaphthalene index increase with the thermal maturity. The relative distribution of dibenzothiophene is well used for maturity assessment.

甲基萘指教和甲基菲指数随热演化程度的增加而逐渐增大；二苯并噻吩异构体的相对分布可用于成熟度评价；稠环芳烃中。

To probe into effect of photodynamic therapy with benzoporphyrin derivative monoacid ring A on vascular smooth muscle cell proliferation.

探讨苯并卟啉衍生物单酸环A光动力作用对血管平滑肌细胞增殖的影响。

This paper mainly studies effect and influence factor that typical corrosive medium (muriatic acid, vitriol, nitric acid, sodium hydroxide, sodium chloride etc.), consistence and condition temperature acts on the material coated on castiron centrifugal interface (PFEP, PPS, CPE, remodeled epoxy). It is studied that powder electrostatic spray, suspend fluid spray, suspend fluid electrophoresis underside coat etc. technics influences on coat quality coated with above four anticorrosive material. The property analysis is done that above four anticorrosive material and three coat technics adapt to centrifugal pump frame and running dynamic condition. In addition, the effect is introduced that castiron centrifugal coated anticorrosive material is used in coal water with alum.

本文侧重研究了典型腐蚀工作介质盐酸、硫酸、硝酸、氢氧化钠碱、氯化钠盐等品种、浓度、环境温度，对铸铁离心泵过流面的聚全氟乙丙烯、改性聚苯硫醚、改性氯化聚醚、改性环氧四种防腐涂层材料的试验使用效果和影响因素分析；研究了四种涂层材料粉末静电喷涂、悬浮液喷涂、悬浮液电泳底涂等涂装方法工艺对涂层质量的影响；四种涂层材料和三种涂装方法对离心泵结构和运行动态环境的适应性分析；介绍了铸铁离心泵防腐涂层在煤矿矾水中的应用效果。

Learn aminolysis of hydroxyl group on aromatics, including the aminolysis of phenol and naphthol.

了解芳环上羟基的氨解，包括苯系酚和萘系酚的氨解

Immunosuppressant: such as azathioprine, cyclosporine A, leflunomide, benzene acid, such as nitrogen mustard.

免疫抑制剂：如硫唑嘌呤、环孢菌素A、来氟米特、苯丁酸氮芥等。

Based on the mechanism of coupling reaction,the reaction of melt metallocene-based Poly(Ethylene-α-Octene) initiated by dicumyl peroxide was studied at elevated temperature in oscillatory shear flow field.

以苯胺、环氧丙烷为原料制备了N，N 二(2 羟丙基)苯胺，然后NHPPA与对硝基苯胺通过重氮偶合反应制备了一种具有推拉电子结构的偶氮化合物4 硝基 4′ N，N 二(2 羟丙基)氨基偶氮苯。

Taking Na_2SnO_3·3H_2O as raw material, organic reagent (pentyl alcohol, butyl alcohol, cyclohexane) as dispersant, and adding anion surfactant (sodium dodecyl alkylbenzen sulfonate, ABS), uniform ultrafine SnO_2 powder is prepared by hydrothermal method using Sn_4 deposition as precursor.

以Na2SnO3·3H2O为原料，有机试剂(正戊醇、正丁醇、环己烷)为分散剂，同时加入阴离子表面活性剂(十二烷基苯磺酸钠，ABS)，以氢氧化锡沉淀为前驱体，用水热法制备了粒度均匀的SnO2超细粉体。

Methods Less toxic solvents such as cyclohexane, n-hexane, petroleum ether and chloroform were compared with benzene and toluene.

用毒性较小的溶剂环己烷、正己烷、石油醚和三氯甲烷等取代苯或甲苯。

In addition, the stability of ternary Cu 〓complexes polypyridyl=1, 10-phenanthroline (Phen , pyrido [3, 2-f] [1, 7] phenanthroline , 1, 4, 8, 9-tetraazatriphenylene , dipyrido [3, 2-a: 2'3'-c] phenazine , imidazo phenanthroline and 2-phenylimidazo phenanthroline , NTP=ATP and UTP was studied by potentiometric pH titration in water at temperature 15℃, 25℃ and 35℃, and in 30% and 50% aqueous dioxane solution at 25℃.

另外，用pH电位滴定法研究了多吡啶芳香配体polypyridyl配合物Cu〓（PL=1，10-邻菲咯啉、吡啶并[3，2-f][1，7]邻菲咯啉、1，4，8，9-四氮三联苯、二吡啶并[3，2-a∶2'3'-c]吩嗪和2-苯基咪唑并邻菲咯啉或咪唑并邻菲咯啉）在不同温度（15℃、25℃和35℃）水溶液及30%和50%二氧六环-水混和溶剂（25℃）中的稳定性。

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。