查询词典 butene

The series of catalysts for dehydrogention of n-butane to 1-butene, including oxidative dehydrogenation with Vanadium-based 、molybdates、metal pyrphosphates catalysts and catalytic dehydrogenation with Pt-based catalysts and ZSM-5 zeolite, are reviewed, the membrane reactor with catalysts is also discussed .

综述了对正丁烷脱氢制备正丁烯的催化剂体系，包括有氧脱氢中钒基催化剂、钼酸盐系列和焦磷酸盐系列催化剂；催化脱氢中贵金属Pt系催化剂、以ZSM-5分子筛为载体的催化剂以及膜反应器。

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。