查询词典 acetic

The high purity of 2-mercapto-β-naphthothiazole was obtained with α-naphthylamine as raw material via reaction of seal glass tube, alkaline extraction, vapor distillation, acidification of acetic acid and ethanol recrystallization.

以α-萘胺为起始原料，通过封管反应、碱提取、水蒸气蒸馏、乙酸酸化和乙醇重结晶，取得了纯度较高的2-巯基－β-萘并噻唑。

In this paper, it is reported the synthesis of a new type of nanostructured film that is composed of needle-shaped TiO2 particles through an acetic acid modified sol-gel method.

使用醋酸修饰的溶胶－胶法制备了一种由针形颗粒构成的二氧化钛纳米薄膜。

Bifidobacteria are nonmotile, anaerobic, and ferment lactose and other sugars to acetic and lactic acids .

双歧杆菌元运动性，厌氧杆菌，能发酵乳糖和其它糖产生醋酸和乳酸。

The bio-degradation pathways of NP would be that the long branches in nonyl of NP are firstly degraded into short methyl branches, which come into being a series of short chain alkyl phenols with different branch structures. The middle products should be further metabolized into simpler compounds, such as benzene acetic.

污水生物处理过程中壬基酚可能的初级生物代谢途径是壬基上的长支链断裂为短的甲基链，生成一系列带有不同分支结构的短链烷基酚类代谢产物，进一步的代谢产物有苯乙酸。

There are different methyl branch structures correlated with isomerous nonyl of NP in the alkyls. The primary metabolites from the dominant bacteria experiment have alkyl phenols and benzene acetic.

研究结果表明，活性污泥降解壬基酚的初级代谢产物主要为C4～C6烷基取代苯酚，烷基链的结构差异与其母体壬基的异构方式有关，烷基上的支链主要为甲基；优势降解菌群代谢壬基酚的初级产物除烷基苯酚外，还有苯乙酸等。

GC/MS analysis showed that the poly (1,1'-bisnaphthol carbonate), 2-ethylhexyl acetate, heptanone,octene and acetic acid were formed during the ester interchange.

本文用金属化合物作催化剂进行1，1′-联二萘酚-4，4′-二乙酸酯和二(2-乙基己醇)碳酸酯的酯交换反应，评价了不同金

The bottled grape wine sealed by natural cork might also suffer from acetic acid bacteria contamination in upright placement, and distinct ringed pellicle gradually presents in the neck of the bottle accompanying with vinegar, rotten apple flavor and other off-flavor.

瓶装葡萄酒如果没有进行无菌处理，用天然软木塞封存，直立存放也可能受到醋酸菌的污染，在瓶脖处滋生明显的环状菌膜，伴随产生醋味、烂苹果味及一些其他异味。

The other was aimed at developing novel solvent system instead of oleum. A kind of solvent system mixed by phosphotungstic acid and acetic acid was put forward.

在实验室中进行了催化剂的考察工作以及工艺条件的考察工作，对实验结果进行了分析和探讨，讨论了各催化剂的催化循环机理，并建立了相应的动力学模型。

Studied the effect of citric acid,lactic acid and acetic acid on the black memtrane elimination of fresh beef omasum.

研究了柠檬酸、乳酸和醋酸对鲜牛百叶的脱黑膜作用。

Examples of fixatives are formaldehyde, osmium tetroxide, ethanol, and acetic acid.

像甲醛、鋨酸、酒精及乙酸等都是常用的固定剂。

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。