查询词典 hydrochloric acid

Tyramine was synthesiaed from p-thydroxybenzaldehyde through condensation with nitromethane and then reduction with tin powder and hydrochloric acid.

以对羟基苯甲醛和硝基甲烷为原料，经缩合和锌粉、盐酸还原合成酪胺，两步反应总收率61％。

In hydrochloric acid, the hydration number of uranyl ion decreases with the increment of CHCl/Cuo22+ mole ratio.

在盐酸体系中，铀酰离子的水合数随酸浓度的增大而减少。

A new production technology,using witherite,hydrochloric acid and industrial refined salt as raw materials,to produce liquid barium chloride with low strontium by crystallization method was put forward.

比较了氯化钡的各种生产方法，提出了以毒重石、盐酸和工业精制盐为原料，结晶法生产液体低锶氯化钡新工艺，并对酸化反应、锶钡分离原理、饱和盐水洗涤及母液处理进行了分析和讨论。

Effects of different temperatures on zein film were evaluated for release of nisin into hydrochloric acid.

研究了4种不同温度对玉米朊包埋乳酸菌素释放的影响。

Zinc chloride is salt of heavy metals, and can integrate to protein of cell to form albumen salt and hydrochloric acid.

氯化锌是重金属盐，能与细胞的蛋白质结合形成蛋白盐及游离酸，杀灭细胞。

Glands in the stomach lining make pepsin ogen, a zymogen converted to pepsin by the hydrochloric acid in gastric juice.

胃内的腺体通过胃液中的盐酸将一种蛋白转化为胃蛋白。

The optimal conditions for extraction of saponins PD from Akebia trifoliate were as follows: 80 ml of 70% ethanol, 90 min action duration, then extractived by n-butyl alcohol for 3 times, hydrolyzed with 36% hydrochloric acid for 4 h at 70%, and extractived by chloroform.

结论］三叶木通中常春藤皂苷的最佳提取工艺为：70%甲醇溶液80 ml超声提取90 min，水饱和正丁醇萃取3次，36%盐酸4 ml，70℃水浴回流水解4 h，氯仿萃取2次，合并氯仿层，旋转蒸干后甲醇溶解定容。

FLD at high dose appears to be better than cimetidine for hydrochloric acid- induced model and ab-solute ethvl alco- hol- induced model.

茯苓饮500，1000，2000mg／Kg灌胃，对大鼠胃粘膜损伤有良好的保护作用，其中对盐酸和无水乙醇模型，茯苓饮高剂量优于cimetidine（P＜0.05，或P＜0.01）。

Using pickling liquid wastewater of hydrochloric acid,iron scurf and aluminiferous mine as raw materials,a series of poly-aluminum-ferric-silicate-chloride which has different molar ratio of Si:Al:Fe was prepared.

利用天津某钢厂的工业废料——盐酸酸洗废液、铁屑和含铝矿等为原料，合成了具有不同摩尔比的无机高分子絮凝剂聚硅酸氯化铝铁，采用Zeta电位测定法分析了产品在其水解溶液中的带电情况，并通过絮凝实验对絮凝剂的絮凝机理作了初步分析。

The strong descaling agent is characterized by its formula composed of 50-65% of hydrochloric acid, 0.6-0.9% of urotropine, 0.5-0.7% of sulfourea, 0.4-0.6% of aminobenzene and the rest is water.

一种强力除垢剂，其特征在于它的配方为：盐酸50―65％，乌洛托品0.6―0.9％，硫脲0.5―0.7％，苯胺0.4―0.6％，余量为水。

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。