查询词典 acetic acid

A new technology process of sodium diacetate production with glacial acetic acid and sodium carbonate in one reactor.

研究了以冰醋酸和碳酸钠一步合成双乙酸钠的工艺和反应设备，使双乙酸钠生产工艺更为简单合理，经济易行，而且产率达 97%以

A new method for preparing sodium diacetate by one step reaction based on acetic acid and sodium carbonate was studied.

介绍了以醋酸和纯碱为原料，不加任何溶剂，采用一步法合成新型防腐剂双乙酸钠的新工艺，确定了最佳工艺条件：n：n为(4.0～4.2)：1；反应温度60～70℃；反应时间120～180min；醋酸加料时间40～60min，所得产品质量合格，收率可达96％以上。

And the epoxy acrylic cationic resin applicable to cathodic electrodeposition coating was synthesized by using aminating agent of diethanolamine and neutralizing agent of acetic acid.

并以二乙醇胺为胺化剂、冰醋酸为中和剂合成了可用于阴极电沉积涂料的环氧丙烯酸阳离子树脂。

The paper studies mainly the separation and recovery of low -concentration sodium sulfate - acetic acid-water system in the laboratory and probes into how varied factors affect the electrodialyzer' s limited electricity current density and in separating process performance.

本课题在实验室范围内，对低浓度硫酸钠—乙酸—水物系电渗析分离过程进行了研究，并就各种因素对电渗析器的极限电流密度和分离过程性能的影响进行了探讨。

Methods 30 samples were treated with 6-amino acetic acid to decrease encephalic pressure and normal cure as a control.

方法对照组30例，入院后给予6-氨基已酸等抗纤溶药降低颅内压力及一般对症治疗。

When methoxyethanol was used as the solvent,tantalum ethoxide can be chemically modified with acetic acid to producetantalum alkxo-acylate precursor, and therefore the hydrolysis of 〓can be slowed down.

在以乙二醇单甲醚为溶剂时，乙醇钽与醋酸作用生成乙醇钽的乙酰基配位化合物，可以减弱水解反应的进行。

Total volatile components, acetone, cyclohexadiene, cyclopentyl ethyne, acetic acid and hexanal contents show more significant correlation with storage time, physiological biochemical indexes respectively, and it can be used as an assessment index for the storage quality of stored maize.

总挥发性物含量、丙酮、对环己二烯、环戊乙炔、乙酸、己醛的含量与储藏时间、生理生化指标呈较高相关性，可作为玉米储存品质变化的评判指标。

OTUs were got from the 60 clones of eubacterium belonged to 5 phylums, ten of which were HPA communities that can turn the VFAs into H2/CO2 and acetic acid.

测得的60个真细菌序列中共得到17个OTU，分别属于Chloroflexi和Proteobacteria等5个不同的门，10个序列为可利用有机挥发酸生成H2/CO2和乙酸的HPA菌群。

There was significant difference between the times of writhes caused by Acetic acid after treated with crude or processed Oxytropis falcate Bunge.

结果 藏药莪达夏炮制前后对大鼠足趾肿胀、小鼠耳肿胀均有明显的抑制作用；炮制前、后莪达夏对醋酸致痛小鼠的扭体次数影响存在显著差异。

Objective To evaluate the safety and efficacy of CT fluoroscopic guidance percutaneous acetic acid injectiontumor ablation and TACE for the malignant liver tumor.

目的评价cT透视引导经皮穿刺乙酸注射联合肝动脉化疗栓塞治疗肝脏恶性肿瘤的安全性和疗效。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。