查询词典 benzene

It is widely used in the abroad, but there is no manufacture factory demestic.Dimethyl benzene as solvent, Hexachlorocyclopentadiene react with 1,5-cyclooctadiene by the Diels-Alder reaction, this is the common method to prepare DCRP.

得克隆即双环辛烷，含有脂环族氯，它是一种性能优异的阻燃剂，在国外正得到广泛的重视和应用，但目前我国还没有研制和生产厂家。

It is widely used in the abroad, but there is no manufacture factory demestic. Dimethyl benzene as solvent, Hexachlorocyclopentadiene react with 1,5-cyclooctadiene by the Diels-Alder reaction, this is the common method to prepare DCRP.

得克隆即双环辛烷，含有脂环族氯，它是一种性能优异的阻燃剂，在国外正得到广泛的重视和应用，但在我国还没有生产厂家。

M Trifluoromethylacetophenone was synthesized by the reaction of acetic anhydride with the Grignard reagent of 3 bromo benzene prepared from trifluoromethylbenzene , in 40% overall yield.

以三氟甲基苯为原料，经过溴化、格氏反应后与乙酸酐反应合成间三氟甲基苯乙酮，总收率40%。

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。