查询词典 aromatic

Under the optimized conditions, in-situ-generated N,N -dioxide from the corresponding amide (10 mol%) and m-CPBA (20 mol%) retained the same asymmetric catalytic activity and enantioselectivity, and most of the aromatic,α,β-unsaturated, heterocyclic, aliphatic and steric hindrance ketones could be converted into the corresponding cyanohydrin trimethylsilyl ethers in up to 99% yield and 93% ee.

底物扩展证明，该有机小分子催化体系对芳香酮、杂芳香酮、脂肪酮、位阻酮以及α，β-不饱和酮都具有优良的手性诱导能力，收率高达99％，对映选择性达93％ee。

At high DS of octanolylated KGM, dodecanolylated KGM, PKGM and octadecenoylated KGM the intercrystalline distances are 2.10, 2.45,2.58 and 3.39nm,respectively,and the effect of DS of KGME on its emulsifying ability has been investigated in aromatic hydrocarbon in water and cycloalkane in water emulsions.

本文用化学方法制备的葡甘聚糖酯从结构上看具有表面活性剂的亲水亲油及聚合物两方面的特性，实验证明，在合适的取代度范围，当葡甘聚糖酯浓度在0.1%～0.01%时，其有较强的乳化力。

Gasolinecontained 67.8% aromatic hydrocarbons, 21.47% olefins and a small quantityof alkanes and cycloparaffin hydrocarbons. The enlarging study on blending feed of vegetable oil and petroleumfraction was performed in a Two-Stage Riser.

通过优化各种因素，植物油的转化率达到81.18%，丙烯产率达到19.52%；汽油的产率为30.58%，其中含有67.87%的芳烃、21.47%的烯烃，以及少量的烷烃和环烷烃，其研究法辛烷值为90.3，抗爆指数为83.9。

The hapten can be synthesized with a spacer attached at the aromatic moiety of the pyrethroid, through the middle of the molecule and at the cyclopropane moiety.

半抗原的合成入手点主要为菊酯分子的三碳环、中间和芳环部分，连接一个连接臂作为半抗原。

There is a slight decrease in the cystine content of the dyed wool whereas the basic and aromatic amino acids are not affected.

有一个略有减少胱氨酸内容而羊毛染色的基本和芳香族氨基酸不会受到影响。

Every summer, plenty of slender squash and tender cucumbers hung from the green vines; we never needed to go to the vegetable market. All you had to do was to pick a cucumber here, grab an eggplant there, chop them up, toss them on the fire, and an aromatic "DaRu Needle" would be ready in no time, sure to make your mouth water.

一到夏天，绿藤上便挂满了细长的丝瓜、鲜嫩的黄瓜……我们根本不需要到集市上去买菜，东家摘个黄瓜，西家摘个茄子，在炉火上一加工，香喷喷的打卤面便呈现在眼前，保证你馋得直流口水。

One exception is the decarboxylation of aromatic carboxylic acids.

芳香羧酸进行脱羧反应是一个例外。

The existence of aromatic ring reduces the rates of thermal and thermal-oxidative decomposability during high temperature stage.

芳香环的存在降低了树脂体系高温阶段的热分解和热氧化分解的速率。

The results showed that the preoxidation of PPESK was a free radicals reaction,which was initiated by the decomposition of proton in aromatic ring and sulfone functional group and the removal of H_2O and SO_2.When the preoxidation temperature was above 460℃,the radical reaction was initiated by the decomposition of ketone functional group and the removal of CO_2.At last,the three-demensional cross-linking structure containing polyaromatic ether and biphenyl was formed.

研究表明，PPESK的预氧化过程是一个自由基反应过程，始终伴随着芳香环质子和砜基官能团的脱除引发的自由基交联反应，脱出H_2O与SO_2；当预氧化温度超过460℃后，随着反应的进行，由羰基官能团分解引发的自由基交联反应开始发生，脱出CO_2，并最终形成了含有大量聚芳醚和联苯结构的稳定的三维空间网状结构，进而完成PPESK由热塑性材料向热固性材料的转化。

The results provided valuable references for studying microbiological degradation mechanism in the reactor, and enriched microbial resources of nitrogen-containing aromatic degrader.

研究结果为含氮芳烃废水处理研究提供了一些有价值的参考依据，并丰富了含氮芳烃废水降解菌资源。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。