片语

Knoevenagel condensation reaction缩合反应

darzens condensation reactiondarzens反应

Condensation color reaction缩合显色反应

a condensation reaction缩合反应

proton condensation reaction质子化缩合反应

aldol condensation reaction羟醛缩合反应

piperazine condensation reaction哌嗪缩合反应

gabriel condensation reactiongabriel缩合反应

Condensation Polymerization Reaction缩聚反应

英汉例句

• adding the pq additive with 2 times, to the addition condensation reaction of urea with formaldehyde, can reduce the content of free ch 2o and increase stability of uf resin adhesive .

  在尿素与甲醛加成-缩合反应中，分2次加入自制pq复合添加剂，可明显降低游离甲醛的含量，提高脲醛树脂胶粘剂（uf胶）的稳定性。

• as solvent, phenol could dissolve liquefaction products with phenolic structure and could prevent or weaken the condensation reaction among the small active molecules.

  苯酚作为溶剂，使生成的酚类结构化合物溶解，并减缓或阻止了已生成的活性小分子之间的缩聚反应。

• in this paper, the progress on diphenolic acid preparation by condensation reaction of levulinic acid and phenol is introduced.

  利用乙酰丙酸和苯酚缩合反应制取双酚酸。

• quantum chemistry is applied to study condensation reaction mechanism of propionate acid and aniline.

  用量子化学方法研究了丙酸与苯胺缩合反应机理。

• the induction period for the condensation reaction was shortened.

  反应的「诱导期」缩短了；

• the condensation reaction of levulinates with ethylene glycol brings about corresponding ketal, with respective productivity of 74%, 75% and 75%, and respective structure being verified by irs.

  由乙酰丙酸酯类化合物与乙二醇进行缩合反应，得到相应的环状缩酮化合物，产率分别为74 % ，75 %和75 ，其结构为红外光谱所证实。

• objective to improve piperazine condensation reaction in the preparation of ciprofloxacin hydrochloride.

  目的改进盐酸环丙沙星制备中的哌嗪缩合反应。

• this reaction accorded with the proton condensation reaction mechanism and the first order reaction.

  该合成反应符合质子化缩合反应机理和一级反应动力学特征。

• the second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate and through a one-step condensation reaction in organic solvent and under the action of catalyst.

  第二种聚 酰亚胺聚合物是芳香族四酸二酐与芳香族二异氰酸酯，在有机溶剂中，在催化剂的作用下，一步法缩合反应制备得到；

• the condition of condensation reaction such as solvent, ratio of reactants, temperature, time and quality of reactants were studied.

  系统地研究了缩合反应的条件，如介质、时间、温度、配比、原料质量对产率的影响；

• the liquid-phase condensation reaction kinetics of isophorone synthesis was investigated by using acetone as raw materials.

  研究以丙酮为原料液相法合成异佛尔酮的液相缩合反应动力学。

• aldehyde-ammonia condensation reaction is one of the typical routes to manufacture alkyl pyridine.

  醛氨缩合反应是制备烷基吡啶最具代表性的反应路线之一。

• it was shown that the curing process of resoles, at first, proceeded by condensation reaction of methylol groups, and the formation of dimethylene ether linkage was predominant.

  结果表明热固性酚醛树脂的固化过程，首先是羟甲基发生缩合反应，缩合反应形成醚键是主要的。

• a thermosetting resin made by a condensation reaction of a melamine derivative, trimethylolmelamine, c3n3(nhch2oh)3, with formaldehyde.

  蜜胺衍生物三羟甲基蜜胺c3n3（nhch2oh）3与甲醛的缩聚反应制得的热固性树脂。

• the conventional method was by the condensation reaction of formaldehyde and polyvinyl alcohol.

  常规的制备方法是通过甲醛和聚乙烯醇的缩合反应来实现的。

• the studies on benzoin condensation reaction and its application at home and abroad in recent years were summarized.

  综述了近年来国内外安息香缩合反应与应用的研究进展。