查询词典 aromatic properties

Effects of reaction temperature,reaction time and mole ratio of nitric acid to aromatic hydrocarbons on performance of the catalyst were investigated.

实验结果表明，磷钨酸对低沸点芳烃液相硝化反应具有显著的催化活性，在优化的条件下，苯、甲苯和氯苯的转化率分别为98.0%，99.5%，100.0%。

Humic acid in soil plays an important role in transfer of hydrophobic organic compounds such as polycyclic aromatic hydrocarbons.

土壤腐殖酸的吸附作用对多环芳烃等疏水性有机污染物的迁移产生影响。

Objective To study the influences of external exposure on polycyclic aromatic hydrocarbons-DNA adduct formation in lung cancer patients.

目的 探讨某些外在因素和体内多环芳烃类-DNA加合物的量以及人肺癌三者的关系，以期评价环境的影响，发现高危人群。

The face of Germany wine is quite a personality——they generally have one color:white. They owe aromatic, semisweet or sweet, the alcoholicity is not high; they seldom pack grape in oak pail for wine-making. They put down the grape varieties on the label. They never adopt the standard of French AOC system to classify their wine.

导语：德国葡萄酒面孔很有个性——它们一般只有一个颜色：白色；它们都具有果味，半甜或很甜，酒精含量不高；它们很少被装在橡木桶里酿制；他们的酒标上标明酿制葡萄酒的葡萄品种；他们对酒的分类也不采用类似法国AOC体系的评级标准。

The face of Germany wine is quite a personality——they generally have one color:white. They owe aromatic, semisweet or sweet,the alcoholicity is not high; they seldom pack grape in oak pail for wine-making. They put down the grape varieties on the label. They never adopt thestandard of French AOC system to classify their wine.

德国葡萄酒面孔很有个性——它们一般只有一个颜色：白色；它们都具有果味，半甜或很甜，酒精含量不高；它们很少被装在橡木桶里酿制；他们的酒标上标明酿制葡萄酒的葡萄品种；他们对酒的分类也不采用类似法国AOC体系的评级标准。

The aromatic aldehyde compounds are a kind of fine chemicals and have the very broad market prospect.

芳香族醛类化合物是非常重要的一类精细化学品，具有很广阔的市场前景。

The BEF was cured with one alicyclic anhydride and two aromatic diamines, respectively.

分别采用一种脂环族酸酐及二种芳香胺类固化剂进行固化，对新型含氟环氧树脂的性能进行研究。

In the point of view of molecule force theory, the physical regularity reflected in physical phenomenon of the normal boiling point for open chain, aromatic, alicyclic hydrocarbons and carboxylic acids, a new theoretical equation of the normal boiling point for them is proposed.

应用分子力学理论揭示出烃类和羧酸等的正常沸点 Tb这一物理现象中的物理规律性，从而提出其正常沸点的理论方程，物理意义明确，经用链烃，环烃和羧酸等的298个纯质的实测值验算，平均误差为0。

A novel trifunctional fluorinated epoxy compound was synthesized, which was cured with one alicyclic anhydride and two aromatic diamines, respectively.

固化后的含氟三官能团环氧树脂表现出高玻璃化转变温度、低介电常数、低热膨胀系数、低吸水率等特点。

Three alicyclic dianhydrides, 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2,4,5-cyclopentanetetracarboxylic dianhydride, and 1,2, 4, 5-cydohexane tetracarboxylic dianhydride were polymerized with two aromatic diamines, 1,4-bis (4-amino-2-trifluoromethylphenoxy) benzene (6FAPB, a) and 4, 4'-bis(4-amino-2-trifluoromethyl phenoxy) biphenyl (6FBAB, b) respectively, via a two-step polycondensation procedure to afford two series of fluorinated semi-alicyclic polyimides.

分别将脂环族二酐单体1，2，3，4-环丁烷四酸二酐、1，2，4，5-环戊烷四酸二酐和1，2，4，5-环己烷四酸二酐与芳香族含氟二胺1，4-双（4-胺基-2-三氟甲基苯氧基）苯(6FAPB， a)和4，4'-双（4-胺基-2-三氟甲基苯氧基）联苯(6FBAB， b)反应制备两个系列的含氟半脂环族聚酰亚胺，研究了PI薄膜的热性能和光学性能。

When the distant computer answers with a higher pitched "carrier tone," you place the telephone handset in the acoustic coupler and transmit and receive data.

当远端计算机发出一个更高音调的"载波音"作为应答时，你将电话听筒放在声音耦合器上并开始发送和接收数据。

William: Nathaniel. I'm so delighted you're here. My boy!

Nathaniel 你能来我真高兴，我的孩子！