查询词典 sulfuric acid

This invention relates to method of using boron magnesium fertilizer to produce fiber shape magnesium hydroxide fire retardant. First dissolve boron magnesium fertilizer, then add magnesia and oxydol to solution to carry out sulfuric acid neutralization and ferrous ion oxidation, remove iron ion, then add ammonium bicarbonate to carry out metathetical reaction.

利用硼镁肥生产纤维状氢氧化镁阻燃剂的方法，涉及一种制取纤维状氢氧化镁的方法，首先将硼镁肥溶解，然后向溶液中加入氧化镁和双氧水进行硫酸中和与亚铁离子氧化并除去铁离子，然后对余液加入碳酸氢铵进行复分解反应。

Using the improved method, the standard molal enthalpies of solution ＝－29.18 kJ·mol－1 in pure water and ＝－25.79 kJ·mol－1 in aqueous sulfuric acid were obtained, respectively.

借助VOSO4水溶液的离子缔合平衡和硫酸的二级解离平衡，改进了Archer方法，并用这种改进的方法分别估算了VOSO4·2.76H2O在水中的标准摩尔溶解焓＝－29.18 kJ·mol－1，以及在0.5 mol·kg－1硫酸水溶液中的标准摩尔溶解焓＝－25.79 kJ·mol－1。

In this paper, we studied the separative effect of protein components in crude Morinda polysaccharide by the Sevag method in order to compareison through Kjeldahl Determination of protein content change before and after separation, and to anthrone-sulfuric acid measured the content changes polysaccharide content before and after separation.

本文通过以凯氏定氮法测定巴戟天粗多糖经Sevag法分离前后蛋白质含量的变化，并以蒽酮一硫酸法测定分离前后多糖含量的变化比较，研究了用Sevag法对巴戟天粗多糖中的蛋白质成分分离的效果。

The preparation conditions, such as the ration between naphthenic oil and fuming sulfuric acid, reaction time and reaction temperature, were investigated and the optimum results were obtained.

对产物用红外光谱仪进行了结构分析，并确定了反应的最佳工艺条件：环烷基油与发烟浓硫酸的体积比为5：1；最佳反应时间为4 h；最佳反应温度为40℃。

In order to recover nonferrous metals in copper-nickel alloy scrap, a corresponding technology was adopted as follows crushing copper-nickel alloy scrap→leaching the sample with sulfuric acid→extracting copper ion with N902→extracting zinc ion with P204→getting nickelous sulfate solution.

摘 要：采用粉碎白铜合金废料→酸浸出→N902萃取分离出铜离子→P204萃取分离出锌离子→水相中剩余硫酸镍溶液工艺回收白铜合金废料中的有色金属。

In order to recover nonferrous metals in copper-nickel alloy scrap, a corresponding technology was adopted as follows crushing copper-nickel alloy scrap→leaching the sample with sulfuric acid→extracting copper ion with N902→extracting zinc ion with P204→getting nickelous sulfate solution.

采用粉碎白铜合金废料→酸浸出→N902萃取分离出铜离子→P204萃取分离出锌离子→水相中剩余硫酸镍溶液工艺回收白铜合金废料中的有色金属。

Moreover, according to supply and demand at home and abroad, and market price changes, and so on, will also be on the next year, oil, o-dichlorobenzene, nitrotoluene, oriented silicon steel sheet, seamless stainless steel tubes, marine boiler gearshafts, heat-sensitive business card printing, contact image sensor, wind power equipment and other products are no longer implemented a lower rate of tax on imported tentative recovery rates, and increase the fuel oils, distillation of sulfuric acid, sulphor, autoconer, fccl copper foil products imported to the tentative tax rate.

此外，根据国内外供需状况和市场价格变化等情况，明年还将对磷酸、成品油、邻二氯苯、硝基甲苯、取向性硅电钢宽板、不锈钢制无缝锅炉管、船舶用传动轴、热敏制卡头、接触式图像传感器、风力发电设备等产品不再实施较低的进口暂定税率，恢复最惠国税率，并适当提高了燃料油、升华硫磺、硫酸、自动络筒机、覆铜板用铜箔等产品的进口暂定税率。

In pH=2.0 sulfuric acid solution, 2,2′bipyridine, an almost nonluminescent compound was transformed into a highly fluorescent compound (λex=340 nm,λem=430 nm) when attacked by ·OH generated by Fenton reaction.

在酸性介质中，Fenton反应产生的羟基自由基能将几乎无荧光的2，2′-联吡啶氧化成强荧光物质，羟基化产物的最大激发和发射波长分别是340 nm和430 nm。

The test solution is prepared by dissolving 4 g of copper sulfate pentahydrate in 250ml of distilled water to which 1ml of sulfuric acid has been added.

将4g五水硫酸铜（CuSO4 5 H 2O）溶于已经加入了1ml 硫酸的250ml 的蒸馏水里。

The task and goal on phosphatic compound fertilizer industry in Hebei province during the period of the Eleventh Five-Year Plan are presented, and the future development on phosphates, sulfuric acid and compound fertilizers are discussed.

介绍河北省&十一五&期间磷复肥工业发展的任务与目标，以及磷肥，硫酸，复混肥行业发展的工作思路。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。