反应方式

This mechanism is different from that for the acetalization reaction of polyvinyl alcohol with saturated aldehydes,which has only 1,2-addition.Crosslinking in polyvinyl butenal was mainly resulted from the 1,4-addition.

此机理不同于只有1，2-加成方式的聚乙烯醇缩饱和醛化反应。1，4-加成主要导致聚乙烯醇缩丁烯醛的交联。

Some methods of characterization and determination of transiormation ratio irorn acetylamine to amine in the deacetylation of chiun have been reviewed and evaluated.

本文对甲壳素脱乙酰基制取壳聚糖的反应中从乙酰胺基转变成胺基的转化率的各种表征方式和测定方法进行了详细综述和评价。

The electrochromic materials can be classified as anodically colored and cathodically colored materials by electrochemical reaction modes.

电致变色材料根据其电化学反应的方式可分为阳极着色和阴极着色两类。

Theelectropolymerizaitons in the present study was followed by in situ UV-visspectrometry,which showed the rate of elecctropolymerization decreased as theconcerntration of anthranilic acid in reaction solution.

本文涉及的电化学聚合均用在线紫外—可见光谱进行跟踪，结果表明电化学共聚随着反应体系中邻氨基苯甲酸的浓度的增加而变慢；同时，在电化学聚合过程中的电流—时间瞬时响应曲线表明聚邻甲基苯胺和共聚物均可能是以三维累积成核的方式沉积在ITO导电玻璃电极上。

This thesis makes up the direction for Cu-Zn-Al-O catalyst, explores the perparation method and technological conditions、the reduction method and technological conditions of Cu-Zn-Al-O catalyst, investigates Cu-Zn-Al-O catalyst activity, and studies the kinetics of γButyrolactone synthesis reaction by the liquid phase dehydrocyclization from 1, 4-Butanediol on Cu-Zn-Al-O catalyst in the batch reactor.

研究了Cu-Zn-Al-O催化剂的配方、制备方法和工艺条件、活化方式和工艺条件，考察了催化剂的活性，并在全混釜反应器中研究了1，4—丁二醇在Cu-Zn-Al-O催化剂上液相脱氢环化合成γ—丁内酯的反应动力学特性。

Expression of this gene is more efficient, because the enzyme catalyses the three chain elongation reactions starting from the C5 precursors to the C20 molecule.One way to increase the heterologous production is to increase the pool of precursors in the host.

表达这种基因是更有效率的，因为酶催化的三个链伸长反应，从碳五前兆向c20 molecule.one方式，以增加外源生产，是增加池体在东道国。

In conclusion, adjustability of leaf morphology were stronger than crown form within Chamaecyparis obtusa var. formosana forest for different crown classes. Take leaf level as main adaptation strategy to catch light resources efficiently under canopy.

综合言之，台湾扁柏林内不同冠级林木在树冠形态的调整，以叶形态反应较冠形态强烈，即以叶层级为主要调整方式，提高光截取利用之效率。

When the ratio of starch to sodium chloroacetate is 1:1, the optimal reaction conditions were: microwave radiation time 30 min, addition of 12 mL 96% isopropyl alcohol, CMS with DS 0.7 and solution viscosity of 10000~20000 mPa.s was produced, and better appearance was presented compared with that by dry method.

使用微波辐射作为反应的加热方式，考察了微波辐射时间、碱、溶剂等条件对微波法制备羧甲基淀粉产品取代度和黏度的影响，并最终确定了在微波照射时间为30min，加入96%异丙醇条件下制备出取代度达0.7，黏度在10000～20000mPa.s的产品。

The Langmuir Blodgett technique was employed to modify the PVC liquid membrane, the LB film of trioctylcetyl ammonium chloroauric acid was deposited on the surface of PVC liquid membrane, and the gold selective electrode with such modification has been fabricated.

1引百 LB膜技术〔''是近年来超分子组装化学中应用最多和相对最成功的分子装配技术，因能较好地在许多固体表面按设计方式组装空间有序的超分子体系，特别是其器件研制最基本的实验手段之一卿，由于LB膜修饰层有序，高密，超薄，能从根本上改进电极体系及其反应过程的性质和行为

The idea behind it was to keep a really cinematographic feel, but at the same time be responsive in a really direct way.

背后的想法是让一个真正电影的感觉，但在同一时间作出反应的真正直接的方式。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。