查询词典 acetic acid

The optimum conditions were obtained: reaction time 10 h, amount of catalyst for the quality of glycerin 5%, molar ratio of glycerin to acetic acid 1:8, under which the yield of glycerol triacetate reached 93.8%.

实验结果表明，反应时间10h，催化剂用量为甘油的5%，甘油／乙酸=1：8的条件下，三醋酸甘油酯的收率达93.8%。100~130℃时，反应活化能为113.245kJ/mol。

For clear-cut the Troche of bearing blood effect of anti-radiotherapy, this article through to operate the technique of pick eyeball to tack blood and use Acetic acid to dash out bone marrow, detect the number of leucocyte and kaiyote of bonemrow.

为了明确生血片抗肿瘤放疗的作用，本文通过运用摘眼球法取血和醋酸冲出骨髓的方法，检测了放疗小鼠的白细胞数及骨髓有核细胞数。

Anti-inflammation effect was determined by using of auricle tumefaction mice caused by dimethylbenzene.Results Paozhenling obviously decreased the quantity of body wrest caused by acetic acid and the time of biting at foot caused by formaldehyde in mice.

结果 疱疹灵明显降低醋酸致小鼠扭体次数，减少小鼠因甲醛伤害舔咬后足及阴器的时间；本品明显降低所用磷酸组胺总量，提高豚鼠致痒阈；4倍于临床用量的疱疹灵还有一定的改善二甲苯致小鼠耳廓肿胀作用。

Acetic acid, glucose and starch (ratio=3:1) as well as starch and peptone (ratio=3:1) were used as main sunbstrates for the calcium-containing wastewaters, which represented the wastewaters containing acidified, unacidified and unliquefied organic compounds, respectively.

本研究分别采用以乙酸、葡萄糖＋淀粉（质量比3∶1）、淀粉＋蛋白胨（质量比3∶1）为底物的含钙合成废水，分别代表已经酸化的有机废水、易酸化的有机废水和难酸化的有机废水，通过在UASB反应器中的运行，研究了厌氧生物过程对高钙废水去除作用、去除机理以及重要的影响因素。

Take DPPH··ethanol solution as the oxidant system to research on the DPPH··scavenging capacity of the liquid fermented vinegar from north fruits like hawthorn, apple, tangerine, beach jujube, kiwi fruit, pear, mulberry, persimmon, medlar, kernel-apricot etc. and grains like corn, sorghum, millet, wheat, buckwheat, Job"s-tears, purple rice etc. it was found that the scavenging effect on DPPH··of the grain vinegar and fruit vinegar after brewing and sterilization was significantly higher than that of their corresponding vinasse, and With the increase of addition, scavenging rate is gradually increased. To most fruit vinegar and grain vinegar, the scavenging effect on DPPH··are stronger than acetate, and acetic acid has some effective but is not functional, consequently it"s other ingredients that really played scavenging effect in the fermentation of vinegar.

本实验采用DPPH··乙醇溶液为氧化体系，研究北方产山楂、苹果、蜜橘、滩枣、猕猴桃、酥梨、桑椹、水柿、枸杞、仁用杏等数十种果品，以及玉米、高粱、小米、小麦、荞麦、薏米、黑米等数十种粮食作物为原料的液态发酵醋对自由基DPPH··的清除能力，结果发现经过酿造杀菌后的成品果醋及粮食醋对DPPH··的清除作用明显高于其相对应的酒醪；并且随着加入量的增加其清除率也逐渐增高，其中大多数果醋及粮食醋对DPPH··的清除作用均强于醋酸，发现醋酸对DPPH··虽然有一定的清除率但是作用不大，因此说明真正对DPPH··起到清除作用的还是发酵醋中的其他成分。

Ethyl Acetate: A sweet, vinegary smell that often accompanies acetic acid.

乙酸乙酯：一种美好的酸味，经常伴随着醋酸一起出现。

A vinegary smell is caused by acetic acid, while a nail polish aroma reflects the formation of ethyl acetate.

葡萄酒中也会闻到破败气味。像醋气味是由乙酸造成的，而指甲油味是由乙酸乙酯形成的。

METHODS By the means of viscometry , the effects of reaction time , chitosan and acetic acid concentration on the hydrolytic velocity of chitosan by ultrasonic wave were investigated .

采用粘度测定法，探讨了超声波辐射时间与壳聚糖粘度的关系以及壳聚糖的浓度，醋酸的浓度对降解速度的影响。

" Acetylcholine: Ester of choline and acetic acid, a neurotransmitter active at many nerve synapses and at the motor end plate of vertebrate voluntary muscle s."

乙醯胆碱：胆碱和醋酸的酯，是许多神经突触和脊椎动物肌肉运动神经终板的神经介质(在重症肌无力里，这种活动停止)。

The results showed that the optimal conditions for synthesis of benzyl acetate were: the molar ratio of acetic acid to benzyl alcohol was 2∶1,the amount of the water carrier was...

在此条件下，酯化率为76%，酯含量为91%。Al2O3/SO42-催化剂的合成方法简单，催化活性高，可重复使用多次。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。