查询词典 sulfuric

Difluorodiphenylsulfone and 4, 4"-difluorodiphenylketone are sulfonated by 50 % sulfuric acid. A new biphenol monomer containing six-membered ring imide is synthesized by reaction of 1, 4, 5, 8-naphthelenetetracarboxylic acid dianhydride with 3-aminophenol or 4-aminophenol sodium.

以50%发烟硫酸为磺化试剂，以4，4′-二氟二苯砜和4，4′-二氟二苯酮为原料反应得到双磺化的4，4′-二氟-3，3′-二磺酸钠-1，1′-二苯砜和4，4′-二氟-3，3′-二磺酸钠-1，1′-二苯酮。

The present invention relates to method of preparing sulfuric acid with sulfur from gas turbine, and belongs to the field of inorganic chemical technology.

本发明涉及一种利用燃气轮机的硫磺制备硫酸的方法，属无机化工技术领域。

Use of Sulfuric Acid may cause initial discoloration of interior tank wall surface due to oxidation.

盛装此浓度的硫酸时，刚开始时会使桶内壁氧化变色。

The influence of various factors on the efficiency of separation on ammonia nitrogen was investigated, including the surfactant dosage, the value of pH in the external phase, the concentration of sulfuric acid in the internal phase, the ratio between the volume of oil phase and the volume of water phase and so on.

用ME表面活性剂制作的乳液萃取冶金废水中的氨氮，考察了表面活性剂用量、外相水pH值、膜内相硫酸浓度、油内比、乳水比等因素对氨氮去除率的影响。

Using a special experimental apparatus, referring to the iodometry, the optimal measuring condition of high DO, the optimal dose of alkaline potassium iodide and sulfuric acid are determined.

采用自制的实验装置，参照碘量滴定进了试验，确定了碱性碘化钾和硫酸试剂的最佳加入量和最佳测定条件。

Although sulfuric group can ionize at any pH value, but the ionization degrees of carboxylic and phenolic group in the solutions increase with increasing pH values.

磺酸在所有pH范围完全电离，但羧酸和酚羟基的电离程度随溶液pH降低而减少。

Ammonium iron blue was prepared after the white slurry had been boiled at 100 ℃ for 1 h, added 50% sulfuric acid then boiled at 100℃ for 2 h, and oxidized at 70 ℃ for 3 h by 10% NaClO_3 solution.

将所得白浆在100℃下热煮1 h，加入质量分数为50%的硫酸溶液酸煮2 h，降温至70℃后加入质量分数为10%的氯酸钠溶液氧化3 h得到铁蓝。

The company has invested heavily in recent years, the introduction of the Danish prime TOP acid technology, will lead sintering flue gas sulfur dioxide generated in the process made of sulfuric acid, utilization rate of 98%, and produced good economic benefits and social benefits.

公司投资近年来大量，丹麦首相热门酸技术的引进，将导致烧结烟气中二氧化硫硫酸所作的过程中产生的，使用率为98％，并产生良好的经济效益和社会效益。

It is found that using salicylic aldehyde to block amino group,reactive dyeing and after treatment with 3g/L sulfuric acid at 40℃ for 20 minutes,chitin/cotton blended fabric features good levelness and litt.

该工艺可提高甲壳素/棉混纺织物的匀染性，且对抗菌性和皂洗牢度的影响小。

In the medium of sulfuric,a analytical method for determining copper and iron in electrodeposited copper lixivium by flame atomic absorption spectrometry was studied.

在硫酸介质中，以铜和铁的次灵敏吸收线249.2nm，302.1nm为吸收波长，用空气-乙炔火焰原子吸收光谱法测定了电积铜浸出液中铜和铁。

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％。