查询词典 acid process

An acid dyeable polyacrylonitrile blend fiber was prepared by blending polyacrylontrile and a copolymer syn-thesized from trihydroxy methyl-aminomethane containing basic groups and acrylonitrile raonomr via wet spinning process.

用含有碱性基团的丙烯酸氨基酯与丙烯腈单体共聚，其共聚物与聚丙烯腈共混，经湿法纺丝制备酸性染料可染PAN共混纤维。

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。

It is reported that the electrolytic process of oxalic to glyoxalic acid by electroreduction on titanium cathode in this paper.

本文报道在钛阴极上草酸还原制乙醛酸的电解工艺。

This dissertation studied the electrode process of direct electroreduction nitrobenzene to /j-aminophenol on different electrodes in sulfuric acid systems. The synthetic technology has also been discussed in this dissertation.

本文以硝基苯为原料，在硫酸体系中，研究了不同电极材料上直接电还原合成对氨基苯酚的电极过程，并对其合成工艺进行了探讨。

The results showed that WC/CNT nanocomposite exhibited better catalytic activity for the electroreduction of nitrobenzene than separate WC nanoparticles and CNTs,and it also had good electrochemical stability during the process of electroreduction of nitrobenzene in acid solution.

结果表明，WC/CNT纳米复合材料对硝基苯的电催化活性优于纳米WC和CNT，且WC/CNT纳米复合材料在硝基苯电还原过程中保持良好的化学稳定性。

This process hydrolyzed ellagitannins effectively and increased ellagic acid content from 2.3 mg/g to 14.9 mg/g.

此制程的终产物鞣花酸纯度可达80%以上，整体纯化过程鞣花酸的回收率约47%。

In this paper, the electroplating of bright Zn-Ni alloy process was studied, the effect of (1-hydroxy ethylidene diphosphonate acid coordinating agent, chloride content, [Zn2+]/[Ni2+] mole ratio, cathode current density, temperature, a class of aldehyde compound (abbreviated as ZNP additive agent) and supplementary coordinating agent on Ni content, and brightness of plating layer was discussed, the physical phase of alloy plating layer and stability of plating solution were determined.

研究了用有机多膦酸盐作络合剂，ZNP作添加剂电镀光亮锌镍合金，探讨了络合剂、氯化物含量、[Zn2+]/[Ni2+]比、阳极电流密度、温度、辅助络合剂对合金中镍含量的影响，测定了合金镀层中物相组成及镀液稳定性，通过筛选得出最佳最镀光亮锌镍合金的镀液组成及工艺条件，并讨论了锌镍合金的异常共沉积机理。

Objective To investigate the expression of glial fibrillary acidic protein gene and its significance in the process of glioma cell differentiation induced by nordihydroguaiaretic acid.

目的 探讨去甲二氢愈创木酸诱导恶性胶质瘤细胞分化过程中对GFAP基因表达的影响及其意义。

The technologies 0f the natural gas pretreatment mainly include:removal 0f acid gas,water,mercury and heavy hydrocarbon;fluidification process mainly include:step—type refrigeration circulation,refrigeration circulation 0f mixed refrigerant and refrigeration circulation 0f expander.

天然气预处理的工艺技术主要包括：酸性气体的脱除、水的脱除以及汞及重烃的脱除等；液化工艺流程主要有阶式制冷循环、混合制冷剂制冷循环、膨胀机制冷循环。

This paper studies the synthesis of the Philippines from 9-hydroxy fluorene -9 - formic acid to its bromide process.

本文研究了由菲醌合成9-羟基芴-9-甲酸到其溴代的过程。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。