查询词典 aromatic

Diazonium salt which was formed by reaction of diazotization of eldest aromatic amine then coupling with N-(1-naphthyl)-ethylenediamine dihydrochloride,in NH_3·H_2O-NH_4Cl solution showed a sensitive polarographic wave at peak potential of 0.58vs,SCE.

本文报道了芳香族伯胺的重氮－偶氮化反应所生成的偶氮化合物在NH＿3·N＿2O－NH＿4Cl底液中，在单扫描极谱上，峰电位－0.58V

The species has following traits in morphology and flowering phenology:dichogamy flowering habit,medial aromatic flowers,dime greenlish petalum,sticky pollen,extrose anthera,and wet stigma.

该种呈现以下的形态和开花物候特点：雌雄异熟，花冠中等大小而具香味、花被暗绿色，花粉有粘性，外向花药，湿型柱头。

An amount of the aromatic vinyl polymer is preferably 5 to 150 parts by weight based on 100 parts by weight of the diene rubber.

以100重量份的二烯橡胶为基准，芳香乙烯基聚合物的含量优选为5～150重量份。

Diphenylamine has been found to be an excellent coupling agent for the identification of aromatic amines.

本文推荐了二苯胺作为鉴芳胺化合物的偶合剂，其优于β-萘酚之点在于在酸性介质中即可偶合，试剂稳定便于貯藏，尚可进一步进行酸硷颜色变化试验及氧化还原颜色变化试验。

Many aromatic amine, such as aniline and N-methylaniline and diphenylamine, whose antidetonating quality are excellent, are not only often employed as concocting ingredient of antiknock but also suitable to research with electrochemical methods.

许多苯胺类化合物，如苯胺、N-甲基苯胺、二苯胺是性能良好的非金属抗爆制，也是抗爆剂常用的调合组分，且具有电子转移性质，适于电化学研究。

Aromatic contents and 50% distillate temperatures have much effect on the miscibility of ethanol in diesel fuel.

柴油的烃族组成和50％馏出温度对乙醇与柴油的相容性有较大影响。

The influence of each condition on the reaction speed and yield was studied, and the optimal conditions were: the ratio of the amount of substance of aromatic amine and heptafluoro-isopropyl iodine was 1:1.1~1.5, the amount of substance of sodium dithionite, sodium bicarbonate, aniline compounds were respectively 1.1~1.3, the amount of substance of phase transfer catalyst TBAB and aniline compounds was 0.05~0.1, the concentration of aniline compound was 0.5~1.0 mol/L, reaction temperature was 10~20 ℃, and the solvent was aether.

最佳结果为：芳胺与七氟异丙基碘的物质的量比1：1.1~1.5，连二亚硫酸钠、碳酸氢钠与苯胺的物质的量分别为1.1~1.3，相转移催化剂四丁基溴化铵与苯胺的物质的量比在0.05~0.1，溶剂总用量使苯胺浓度在0.5~1.0 mol/L；反应温度10~20℃；溶剂采用乙醚。取代基供电子性越强，反应时间越短，产率越高；氨基的对位优先反应，氨基的邻位较难发生反应；且七氟异丙基总是优先取代在芳环电子云密度较高的位置上。

In addition, it is intriguing that there is an excellent correlation between the electrostatic energy and ellipticity at the bond critical point of the aromatic π systems, which would be helpful to further understand the electrostatic interaction in the cation-π complexes.

另外，静电能和芳香π体系的键临界点上的电荷密度之间存在着很好的正相关性，这有助于进一步深刻理解阳离子－π体系中的静电相互作用。

Egyptians used frankincense to make cosmetics, embalm dead bodies, and provide an aromatic warmth on the braziers of their homes in chilly weather.

埃及人用乳香来制造化妆品，尸体的防腐剂，把乳香放在屋内的火盆燃烧，可以为寒冷天气的房间提供湿温暖和芳香。

The effects of aromatic solvents, catalyst amount used and reaction conditions on the enantiomer excess e.

本文还探讨了手性相转移催化条件下扁桃酸异构体的不对称合成。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。