The calculated results show that the aza Wittig reaction is a two step reaction, having one four membered ring intermediate on its reaction surface.
计算结果表明该反应是一个二步反应，在反应途径上存在一个四元环中间体。
Two dimensional simplified model of CDE was simulated by two step chemical reaction model.
使用两步化学反应模型对简化的CDE 模型做了二维数值模拟研究。
Polymers are most commonly formed by two main types of growth reaction traditionally referred to us condensation (step reaction) and addition (chain reaction) processes.
形成聚合物的最普通方式是靠两种主要的增长反应，习惯上分别称做缩合（逐步反应）过程和加成（链式反应）过程。
The key step of the two routes is the reaction of nucleophilic substitution of aromatic amines and -bromo compounds. Generally the produce rate of this reaction is low and the reaction time is long.
两条路线中关键的一步反应是芳胺和溴代化合物的亲核取代反应，一般这步反应产率很低，并且需要较长的反应时间。
Moreover, it catalyzes an unusual two-step reaction that is of great fundamental interest.
此外，催化不寻常的两步反应，具有极大的根本利益。
For example, the possible two-step catalytic reaction schemes of SO_2 oxidation on SLP vanadium catalyst and the asymptotic solutions of E_L at some special conditions have been evaluated in detail.
并以SO_2在SLP钒催化剂上氧化过程可能存在的两段式机理为例，说细推导了E_L在某些特定条件下的渐近解。
To develop a practical process for(R)-2-octanol production from racemic 2-octanol, a two step microbial reaction was investigated.
建立了一种新的制备手性2-辛醇的方法——双菌氧化还原耦联转化外消旋2-辛醇制备（R）-2-辛醇。
The present situation of terpinyl acetate synthesis has been reviewed. One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.
综述了乙酸松油酯的合成研究现状，讨论了一步法和两步法合成工艺及相应的反应机理。
Cationic polyacrylamide (CPAM) flocculants, which are applied more and more widely in wastewater treatment, has been obtained usually by the Mannich reaction in a two-step way.
阳离子型聚丙烯酰胺絮凝剂在污水处理方面发挥的作用越来越大，阳离子聚丙烯酰胺往往通过曼尼奇反应以两步法获得。
The synthesis method adopts the two-step reaction under microwave radiation, and has the advantages of high reaction speed, short reaction time, and the product yield over 75 percent.
本发明的合成法采用微波副射下的两步反应，反应速度快，反应时间短，产品收率超过75％。
Vertically aligned hierarchical ZnO rod-in-tube nano-architecture arrays are produced via a two-step process including an initial hydrothermal reaction followed by ultrasonication growth.
垂直排列的氧化锌棒中筒纳米结构阵列是通过两个步骤制备而得的，其中包括一个初始水热反应以及超声增长反应。
Vertically aligned hierarchical ZnO rod-in-tube nano-architecture arrays are produced via a two-step process including an initial hydrothermal reaction followed by ultrasonication growth.
垂直排列的氧化锌棒中筒纳米结构阵列是通过两个步骤制备而得的，其中包括一个初始水热反应以及超声增长反应。
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