英语释义

1. a crystalline heterocyclic weakly basic compound C4H4N2

2. any of various derivatives of pyrazine

片语

Pyrazine e吡嗪

PYRAZINE 99吡嗪

galbanum pyrazine格蓬吡嗪

Methyl pyrazine甲基吡嗪

PYRAZINE P吡嗪P

Styryl pyrazine苯乙烯基吡嗪

Pyrazine KOSHER吡嗪

Terramethy pyrazine四甲基吡嗪

PYRAZINE HCL吡嗪盐酸盐

英汉例句

• the made tea fertilized with urea possessed higher contents of aldehyde, ketone, furan, pyrazine and pyrrole, but lower aromatic index.

  香气分析测定表明，单施尿素的红茶中，醛酮类、呋喃、吡嗪、吡咯类化合物含量较高，香气指数低，「祁红香」不突出。

• the invention relates to thiophene and pyrazine derivatives and a preparation method thereof, belonging to the field of organic electroluminescent materials.

  一类噻吩并吡嗪衍生物及其制备方法，属于有机电致发光材料领域。

• synthesis, structures and properties of multinuclear complexes of pyrazine tetracarboxylic acid and pyridine-2,3,5,6-tetracarboxylic acid.

  吡嗪四甲酸、吡啶-2，3，5，6-四甲酸桥联的多核配合物的合成、结构及性质研究。

• biaryl substituted pyridine, pyrimidine and pyrazine compounds are sodium channel blockers useful for the treatment of pain.

  联芳基取代的吡啶、嘧啶和吡嗪化合物为用于治疗疼痛的钠通道阻滞剂。

• objective to study the protective effect of tetramethyl pyrazine (tmp) on cyclophosphamide injured mice.

  目的：考察川芎嗪对小鼠环磷酰胺损伤的保护作用。

• two bridged substituted styryl pyrazine derivatives have been synthesized in this work.

  本工作合成了两种旋转受阻取代的苯乙烯基吡嗪衍生物。

• in the isodesmic reactions designed for the computation of heats of formation (hofs), pyrazine and pyridine were chosen as reference compounds.

  在设计合理的等键反应时，选择吡嗪和吡啶作为参考物。

• this article dissert on pyrazine derivant of natural presence, spice with structure exchange some regularity and in food flavour of ligand model.

  本文主要论述了吡嗪衍生物的天然存在，香气随结构变化的一些规律和在食用香精中的配方示范。

• this complex has a 1d supramolecular structure due to the coordinated water molecules via hydrogen bonds to the nitrogen atoms of the pyrazine groups.

  结果表明，该化合物通过配位水分子和吡嗪氮原子间的氢键作用，形成了一维链状超分子结构。

• synthesis of 2 hydroxymethyl 3,5,6 trimethyl pyrazine and observation of its affection on rheologic parameters.

  羟甲基─3，5，6─三甲基吡嗪的合成及其对血液流变性的影响。

• the synthetic method of perfume 2 - methyl - 3 - methoxy pyrazine was investigated and better reaction conditions have been found.

  利用相转移催化法合成香料2-甲基-3甲氧基吡嗪，并对其反应条件进行探讨，找到较佳的反应条件。