反应的

The optimal technological conditions of sulfonation which obtained by orthogonal tests were:n∶n=1∶2,reaction temperature is 50 ℃ and reaction time is 6 h.

由方差分析和极差分析可知，物料配比n∶n对反应的影响极其显著，其次是反应时间，温度对反应的影响最小。

The influences of fiber diameter, reaction time and temperature on the reaction were studied.

研究了纤维的纤度、反应时间、反应温度等因素对功能化反应的影响。

But the oxygen reduction reaction on electrode critically obstructs the development of those batteries due to small reversible characteristics and difficult process.

但由于氧气还原反应困难，可逆性小，成为电池反应的主要障碍，因而影响气体扩散电极性能的主要因素是氧还原反应催化剂。

The effects of reaction temperature, phase transfer agent and the concentration of rhodium catalyst were examined.

研究了采用水溶性铑膦络合催化体系对双环戊二烯的氢甲酰化反应，考查了反应温度、相转移剂CTAB、铑催化剂浓度等对反应的影响。

With L-DOPA as the starting chiral phenylalanine derivatives, construction of the skeleton of Phthalascidin was studied. Firstly, starting from L-DOPA and 3,4-dimethoxyphenylalanine, an amide 〓 was obtained, and a modeling cyclization reaction was carried out but failed to give the anticipated product.

二、对由苯丙氨酸甲酯衍生物通过Bischler-Napieralski反应合成四氢异喹啉—3—甲酯进行了研究，通过研究首次发现，生成苄基噁唑的反应是正常的B-N反应的竞争性反应，并从机理上给予了解释，所得出的结论具有一定的规律性，在杂环的合成方面具有一定的应用价值。

The products were analyzed by means of IR spectroscopy.

探讨了催化剂用量、酸醇物质的量比、反应时间、反应温度对反应的影响。

The mechanism of the reaction was studiedin detail,in which excited state avaliable to carryout the excited state intramolecular proton transferreaction was recognized.The INDO/S-CI semiempiricalMO method was used to calculate transition energiesand oscillator strength,and assign spectra theore-tically,the calculated spectra values were basicallyconsistent with the experimental values.Themolecular orbital properties for the adjacent HOMO-LUMO of various kinds of conformersand anion species,thetransition properties and symmetry for thetransition from ground state to lower excited stateswere analysed,especially,no much study on theanion species all of the world.

位能曲线的求法满足反应坐标是反应过程中能量最小途径的定义，较详细地研究了各类反应的质子转移历程，认定在哪个激发态有利于发生激发态分子内质子转移反应，用INDO/S-CI半经验MO方法进行跃迁能和振子强度计算及光谱的理论指认，计算的光谱值和实验值基本吻合，并分析了各种异构体和阴离子的HOMO-LUMO附近的轨道性质，各跃迁态的跃迁性质和对称性，尤其是对阴离子的研究国内外尚不多见。

Using triethanolamine and thionyl chloride as raw materials,tri-(3-chloroethane)amine is synthesized by substitution reaction in the presence of solvent chloroform.

以三乙醇胺和氯化亚砜为主要原料，通过取代反应合成三(2-氯乙基)胺，再在氮气的保护下，经过与对羟基苯甲醛反应，生成三胺，探讨了合成反应的工艺条件。

The optimal conditions and kinetics of enzyme catalyzed interesterification of Chinese vegetable tallow and methyl stearate without solvents was studied.

研究了无溶剂体系酶促乌桕脂与硬脂酸甲酯转酯化反应的工艺条件及动力学，提出了反应初速度和初始浓度及反应历程中组分浓度和时间关系的两种动力学模型。

Further more, the related reaction barriers were evaluated on the basis of single point energy with zero point vibration correction, and the distribution of natural charge was analyzed at MP2/6-311++G** level.

同时在MP2/6-311++G**水平上对各驻点做了单点能计算和零点能校正，计算出各反应通道的活化能，进而确定了该反应的主反应通道，其活化能为42.52 kJ/mol。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失