查询词典 benzene

Three alicyclic dianhydrides, 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2,4,5-cyclopentanetetracarboxylic dianhydride, and 1,2, 4, 5-cydohexane tetracarboxylic dianhydride were polymerized with two aromatic diamines, 1,4-bis (4-amino-2-trifluoromethylphenoxy) benzene (6FAPB, a) and 4, 4'-bis(4-amino-2-trifluoromethyl phenoxy) biphenyl (6FBAB, b) respectively, via a two-step polycondensation procedure to afford two series of fluorinated semi-alicyclic polyimides.

分别将脂环族二酐单体1，2，3，4-环丁烷四酸二酐、1，2，4，5-环戊烷四酸二酐和1，2，4，5-环己烷四酸二酐与芳香族含氟二胺1，4-双（4-胺基-2-三氟甲基苯氧基）苯(6FAPB， a)和4，4'-双（4-胺基-2-三氟甲基苯氧基）联苯(6FBAB， b)反应制备两个系列的含氟半脂环族聚酰亚胺，研究了PI薄膜的热性能和光学性能。

Already alkane and phenol has been important consumption fields of benzene in the ring.

环已烷和苯酚也是苯重要消费领域。二者各占苯消费量的15%-18%。

Long-chain alkene is adsorbed on the surface of catalysts much more strongly than benzene is adsorbed.

长链烯烃在催化剂上的吸附比苯要强得多。

Compared with the traditional surface activites of alky benzene sulfonate and alky sodium sulsate.

与十二烷基苯磺酸钠和十二烷基硫酸钠进行性能对比，表明SNSS表面张力、临界胶束浓度小，乳化力、钙皂分散力强，白度和松散度好。

Most detergents are alkyl benzene compounds, to a certain skin irritation, but will also affect liver function.

洗涤剂大多都是烷基苯类化合物，对皮肤有一定的刺激性，还会影响肝脏功能。

The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.

苯的同源物是于苯环中一个或多个氢原子的位置上以烷基取代的化合物。

Benzene undergoes metabolic oxidation by cytochrome P450 enzymes to form an electrophilic epoxide which can alkylate protein and DNA.

苯在细胞色素P450酶氧化代谢下，形成一种能烷化蛋白质和DNA的电环氧化物。

A new process of liquid phase alkylation of benzene with ethylene was developed.

开发了苯和乙烯液相烷基化反应的新工艺。

The results showed that the catalyst has highly activity and stability in the alkylation of benzene with dodecytene.

研究结果表明负载HPWA的SBA-15催化剂具有较好的催化活性和稳定性。

The experimental and theoretical work on high pressure phase equilibria of the benzene-ethylene alkylation system are undertake at first.

通过实验测定与理论计算，得到了苯与乙烯反应系统的高压流体相平衡，确定了近临界区的大致范围。

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。