查询词典 hydrochloric

Methods:Soluble saccharides and rough polysaccharide were extracted by supersonic wave with 80% alcohol and 2% hydrochloric acid respectively and the outcome extracted with water and precipitated with alcohol was polyose extract.

分别用 80 %乙醇及 2 %盐酸超声波提取白首乌中的可溶性糖及粗多糖，采用蒽酮比色法分别测其可溶性糖及粗多糖的含量，并对白首乌水提醇沉法获得的多糖提取物进行含量测定。

A preparation method of polysilicate polyferric chloride flocculant by leaching ferric tailings with hydrochloric acid pickling wastewater ,was studied,and the reasonable preparation craft and technological conditions were determined.

研究了以盐酸酸洗废液分解铁尾矿制备聚硅酸聚氯化铁复合絮凝剂的方法，确定了合理的制备工艺和工艺条件。

By using the sodium silicate and waste hydrochloric acid as raw materials, polysilicic acid is prepared. The study shows that, under the conditions of the concentration of sodium silicic acid being 4%-8%, the pH, and the reaction time being about 5 hour, the stable polysilicic acid is made.

以水玻璃、废盐酸为原料，制备聚硅酸，研究表明：在硅酸钠浓度为4%~8%，pH小于4的条件下，室温熟化5h左右，可制得稳定的聚硅酸。

By using the hydrochloric acid pickling wastewater and scrap iron asraw materials ,the polysilicic acid - polyferric chloride flocculant isprepared under different conditions.

以盐酸酸洗废液和废铁屑为原料，制备了聚硅酸聚合氯化铁复合型絮凝剂，研究了聚铁中铁浓度、聚合硅酸浓度、聚合硅酸pH值、n∶n及复合熟化时间等因素对絮凝性能的影响。

METHODS Chlorodehydromethyltestosterone was synthesized from methyltestosterone by cycloxidization with hydrogen peroxide to obtain cycloproxene methyltestosterone, which subjected to chloridization with was hydrochloric acid in the presence of propanone to obtain chloromethyltestosterone, and then was subjected to dehydrogenation with DDQ using PTS as dehydrogenation catalyst in benzene.

以甲睾酮和H2O2环氧化反应得到环氧甲睾酮，再与盐酸在丙酮溶媒中进行氯化反应，得到氯甲睾酮，最后用2，3-二氯－5，6-二氰基对苯醌在PTS催化下脱氢得到脱氢氯甲睾酮。

The inhibition of propargyl alcohol for 1Cr18Ni9Ti stainless steel in hydrochloric acid solution is studied with the cyclic voltammetry and ellipsometry.

采用循环伏安法和椭圆偏振光谱法，研究了丙炔醇(Propargylalcohol，PA)对 1Cr18Ni9Ti不锈钢在含有氯离子的腐蚀环境中的缓蚀作用，实验表明Cl-能使 1Cr18Ni9Ti不锈钢发生点蚀，而缓蚀剂PA对不锈钢受到Cl-的腐蚀起抑制作用。

Auxiliary hydrochloric acid, and protopine such materials, the main products of chitin to a plastic bag loaded package, each packet of 10 kg .

辅助盐酸，及片碱等材料，主要生产的产品甲壳素，以塑料袋装包，每包10公斤。

For the sake of developing an effective, safe and no pollution disinfectant to reduce or eliminate food-borne pathogens on shell eggs, the bactericidal activity of neutral electrolyzed water (NEW, pH 6.0-7.5) generated by electrolysis of diluted hydrochloric acid in a non-membrane electrolytic cell for inactivation of Salmonella pullorum, Escherichia coli O157:H7 and artificial inoculated shell eggs initial logarithm of population of two pathogens on the eggs were approximately 6.19-6.26 log10 (cfu/g and 6.12-6.19 log10 respectively was evaluated.

为寻求一种高效、安全、无污染的禽蛋清洗消毒剂，采用无隔膜电解装置电解稀盐酸溶液制备中性电解水（pH值6.0～7.5）考查不同有效氯浓度、处理时间和温度条件下中性电解水对鸡蛋人工接种鸡白痢沙门氏菌（Salmonella pullorum，鸡蛋表面的初始菌落数对数为6.19～6.26 log10）和大肠杆菌O157：H7（鸡蛋表面的初始菌落数对数为6.12～6.19 log10）的杀灭效果。

Existing status of exhaust gas, waste residue, fluorine-containing wasted hydrochloric acid and raffinate from production of tetrafluoroethylene, hexafluoropropylene , their treatment and comprehensive utilization are introduced.

介绍了四氟乙烯、六氟丙烯生产过程中产生的废气、废渣、含氟废盐酸、残液的现状和治理、综合利用方法。

"Finally, hydrochloric acid (327 kg) was added to the product (8) and the mixture was refluxed for approximately 2 hours to allow the amide to hydrolyze to the carboxylic acid."

最后，在产品(8)中加入327千克盐酸，混合物回流加热约2小时，使酰胺水解成羧酸。

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。