硫酸

Control group 50% of the magnesium sulfate wet packing treatment, every 4 hours to replace a time.

对照组采用50%的硫酸镁湿敷治疗，每4小时更换1次。

Is a professional production and sale of aluminum sulfate business.

淄博昊森化工有限公司是一家专业生产、销售硫酸铝的企业。

The conditions of synthesis the lead sulfate are studied.

研究了合成条件对硫酸铅产品纯度和粒度的影响。

To be the best calcium sulfate supplier of China!

做中国最好的硫酸钙供应商！

Main contents and conclusions of this dissertation are as follows:(1) SPEEK with different degree of sulfonation was synthesized by using sulfonation reactions of PEEK and concentrated sulfuric acid.

主要的研究内容和结论如下：1、以PEEK为原料、浓硫酸为磺化剂，制备了不同磺化度的磺化聚醚醚酮。

Molecular weight dextran sulfate is a very low molecular weight dextran by sulfonation from 1500, this drug is also currently the world's AIDS drug, one of the best.

分子量为3000的右旋糖酐硫酸酯，是通过对极低分子量右旋糖酐1500磺化而成，这种药物也是目前世界上防治爱滋病效果最好的药物之一。

And then methanesufonic acid which is colorless and oderless is obtained by the hydrolysis of methane sulfonyl chloride at 70～90℃.

以硫、硫化钠、硫酸二甲酯为起始原料制备了二甲基二硫，然后用氯气氧化二甲基二硫得甲烷磺酰氯，经水解合成了甲烷磺酸，产品无色无味。

Nitro-4-methylsulfonylbenzoic acid was prepared from 4-toluene sulfonyl chloride by the reaction of Alkylation (in the condition of sodium sulfite and baking soda), Nitrification (in the condition of nitric acid and vitriol) and Oxidation reaction (in the condition of nitric acid and catalyzer).

研究了以对甲苯磺酰氯为起始原料，首先通过亚硫酸钠和碳酸氢钠的水溶液进行烷基化、其次在浓硝酸和浓硫酸加热回流的条件下峭化、最后在浓硝酸和催化剂的条件下进行氧化，3步反应合成了玉米田高效除草剂甲基磺草酮的重要中间体2-硝基－4-甲磺酰基苯甲酸。

It's the only known organism that lives in sulfuric acid.

它是目前唯一已知的存活于硫酸中的生物体

China Sulfuric Acid Industry Association, Beijing 100011, China

中国硫酸工业协会，北京 100011

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％。