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hcl     
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  盐酸
     Determination of As(Ⅲ) and As(V) in HCl and Industrial waste water at a Glassy Carbon Electrode by Anodic Stripping voltammetry
     玻璃碳电极阳极溶出伏安法测定盐酸及工业废水中无机的As(Ⅲ)和As(Ⅴ)
短句来源
     THE EXTRACTION OF NOBLE METALS BY N_(1923) Ⅰ. THE EXTRACTION OF PLATINUM, PALLADIUM AND RHODIUM IN HCl MEDIUM
     伯胺N_(1923)对贵金属的萃取——Ⅰ.在盐酸介质中对钯、铂与铑的萃取
短句来源
     Adsorption of Fe~(3+) and Zn~(2+) on Anion Exchange Resin from 6N HCl Solution
     阴离子交换树脂交换吸附盐酸溶液中Fe~(3+)和Zn~(2+)离子
短句来源
     Study on the Kinetics of Reduction of Iridium by Pressure Hydrogen in HCl Medium
     从盐酸介质中加压氢还原铱的动力学研究
短句来源
     THE TRANSFER THHERMODYNAMIC FUNCTIONS of HCl from H_2O to DMSO-H_2O
     盐酸在H_2O与DMSO-H_2O间的迁移热力学函数
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  hcl溶液
     The dissolution enthalpies of the [Yb(NO 3) 3·4H 2O (s)+4Ala(s)] and Yb(Ala) 4(NO 3) 3·H 2O(s) in 2 mol·L -1 HCl solution have been measured at 298.2 K by classical solution calorimetry.
     采用新型具有恒温环境的反应热量计 ,以溶解量热法分别测定了 2 98.2K时[Yb(NO3 ) 3 ·4H2 O +4Ala]和Yb(Ala) 4 (NO3 ) 3 ·H2 O在 2mol·L-1HCl溶液中的溶解焓 .
短句来源
     The inhibitor rate is 0.025mm/a and 0.088mm/a under 120℃ in 15% and 28%HCl solution,and is 0.032mm/a and 0.092mm/a under 120℃ in 15% and 28%HCl/H2S solution.
     在含有H2S的15%和28%的HCl溶液中,120℃下其缓蚀效率可达0.032mm/a和0.092mm/a。
短句来源
     Adsorbed Mo(Ⅵ) and Bi(Ⅲ)could be quantitatively eluted from CCTS with 1.00 mL of 0.1 mol/L NaOH and 4.00 mL of 5.0 mol/L HCl, respectively.
     用1.00mL,0.1mol/L的NaOH溶液和4.0mL,5.0mol/L的HCl溶液可将吸附在CCTS上的Mo(Ⅵ)、Bi(Ⅲ)定量洗脱下来,脱附率分别为93%和96.5%.
短句来源
     STUDY OF ANTI-CORROSION BEHAVIOUR OF TIO_2/AL_2O_3 CERAMIC COMPOSITE COATINGS IN A 5% HCL SOLUTION
     TiO_2/Al_2O_3复合陶瓷涂层在5%HCl溶液内腐蚀行为的研究
     The 1mol/L HCl solution can desorbed the Pb~(2+) and Cu~(2+) from the EPS derivative, and the desorption rate is 75.8% for Pb~(2+) and 95.6% for Cu~(2+).
     用1mol/L的HCl溶液能将pb~(2+)和Cu~(2+)解吸下来,解吸率分别为75.8%和95.6%。
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  浓hcl
     3-Fluoro-4-nitroanisole was reduced by ZnCl_2 and HCl for 12h to form 3-fluoro-4-aminoanisole in 84.1% yield(mp 240~241 ℃).
     在ZnCl2和浓HCl作用下反应12 h,再还原成3-氟-4-氨基苯甲醚,产率84.1%,熔点240~241℃。
短句来源
     Study on esterification with anhydrous CaCl_2 and HCl as catalyst
     无水CaCl_2-浓HCl催化酯化反应研究
短句来源
     2,3-Diaminoanisole was diazotized with conc. HCl and NaNO_2 below 5 ℃ and treated with fluoroboric acids(w(HBF_4)=40%)(Schiemann reaction) to give 2,3-difluoro-4-iodoanisole(Ⅰ) in 40.7% yield.
     以2,3-二氨基苯甲醚为原料,在浓HC l和NaNO2作用下,反应温度在5℃以下,加入w(HBF4)=40%的氟硼酸,加热,经Sch iem ann反应生成2,3-二氟苯甲醚,产率40.7%。
短句来源
     Ⅱ was reduced by SnCl_2 and HCl for 12 h to form 2,3-difluoro-4-aminoanisole(Ⅲ) in 84.6% yield,m. p. 81~82 ℃.
     在SnC l2和浓HC l作用下反应12 h,再还原成2,3-二氟-4-氨基苯甲醚,产率84.6%,熔点81~82℃。
短句来源
     3-aminoanisole was diazotized with conc. HCl and NaNO_2 below 5 ℃ and treated with fluoroboric acid 4%(Schiemann reaction)to give 3-fluoroanisole in 36.6% yield.
     以间氨基苯甲醚为原料,在浓HCl、NaNO2作用下,反应温度5℃以下,加入40%的氟硼酸,加热,经Schiemann反应生成间氟苯甲醚,产率36.6%。
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  “hcl”译为未确定词的双语例句
     Emission and Control Mechanism of HCl and Heavy Metals in Hazardous Waste Incineration
     典型危险废弃物焚烧过程中无机污染物HCl和重金属的生成特性及其控制的机理研究
短句来源
     THE BIPHASIC EFFECT OF β-DIETHYLAMINOETHYL DIPHENYL-PROPYLACETATE HCL ON THE BIOTRANSFORMATION OF SODIUM PENTOBARBITAL
     二苯基丙基乙酸β-二乙基氨基乙酯对戊巴比妥钠体內轉化的双相影响
短句来源
     The MgCl_2—MgO Phase Diagram in Atmosphere of HCl—H_2O—Inert Gas and It's Application.
     HCl-H_2O-惰性气体气氛下MgCl_2-MgO的相图及其应用
短句来源
     Analysis of 15 Rare Earth Elements in Xunwu Ore——Application of the Column Extraction Chromatography with P_(507)HCl System
     寻乌中稀土矿中稀土元素的全分析——P_(507)—HCl体系萃取柱色谱法
短句来源
     Studies on the Solvent Extraction of Rare Earth with Versatic 10——Ⅳ.A Study on the Extraction Equilibrium for Yttrium in YCl_3—HCl—NaCl—Versatic10—n-Hexane System.
     叔碳酸Versatic10对稀土的萃取 Ⅳ.YCl_3-HCl-NaCl-Versaticl10-正已烷体系中钇的萃取平衡研究
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  hcl
Newly obtained benzoxazole and benzimidazole derivatives (1-6) were synthesized in the presence of polyphosphoric acid (PPA) and 6 N HCl, respectively to detect their DNA-damaging activities.
      
Fulleropyrrolidine derivative 2 (R=Me) were hydrolyzed with NaH and methanol in toluene, and then acidified with HCl to result in the corresponding fulleropyrrolidine dicarboxylic acid 3 in a 65% yield (relative to fulleropyrrolidine derivative 2).
      
Volumetric properties of glucose in aqueous HCl solutions at temperatures from 278.15 to 318.15 K
      
Densities have been measured for Glucose + HCl +Water at 10-degree intervals from 278.15 to 318.15 K.
      
Results showed that the morphology of the ZrWMoO8 particles can be simply adjusted by changing the gelling agents, and the thermal expansion coefficients of cubic ZrWMoO8 prepared in HCl solution are -3.84 × 10-6 K-1 from 100°C to 700°C.
      
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In view of the necessity of a rapid and accurate process for the deter-mination of fluorine applicable in the analysis of sodium fluoride and otherfluorine compounds,the author has established a new volumetric processconsisting in the titration in aqueous-alcoholic medium with ferric nitrate asstandard solution and sodium salicylate as indicator.All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on the reaction:6NaF+FeCl_3→Na_3FeF_6+3NaCl....

In view of the necessity of a rapid and accurate process for the deter-mination of fluorine applicable in the analysis of sodium fluoride and otherfluorine compounds,the author has established a new volumetric processconsisting in the titration in aqueous-alcoholic medium with ferric nitrate asstandard solution and sodium salicylate as indicator.All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on the reaction:6NaF+FeCl_3→Na_3FeF_6+3NaCl. But the sodium ferric fluoride thus formed is fairly soluble in water and makesthe end-point unclear,therefore the titration can not be performed accurately.This seems to be due to the fact that the following two reactions advancesimultaneously,and accordingly the formation of sodium ferric fluoride is in-complete in aque(?)us medium:3NaF+Fe(NO_3)_3→FeF_3+3N_aNO_33NaF+FeF_3→Na_3FeF_6Nevertheless,these reactions,according to the author's experiments;proceedalmost quantitatively in meda.containing at least 50% by volume of alcohol.This paper reports the xperimental results obtained in the fundamentalstudies on the various factors influencing the accuracy of the volumetry,namely,the sensitivity and the necessary amount of sodium salicylate used asindicator,the pH value,the alcoholic concentration of the titration medium,the concentration of the fluoride taken for the determination and the timewhen alcohol should be added in the course of titration.Furthermore,a rapidvolumetric process with high accuracy is proposed together with its applicationsin ordinary analyses of sodium fluoride and other fluorine compounds.The proposed method is characteristic in using sodium salicylate asindicator,which shows sharp violet color with minute amount of ferric ion inmedium of pH 3 controlled with buffer solution,then titrating with standardferric nitrate,and adding proper amount of alcohol(the alcoholic concentra-tion at the end-point should be above 50%)during the titration,when themedium becomes orange yellow in color.The method may be summarized as follows:Take 5 ml of neutral sodiumfluoride solution of about 0.3 N in a small Erlenmeyer flask,add 2.5 mlof Walpole's buffer solution of pH 3(formed by dissolving 34.0 g ofcrystalline sodium acetate and 20 ml of 38% HCl in water,and making upto 250 ml)and 1 ml of 0.1 M sodium salicylate dissolved in 50% alcohol.After sufficient stirring,titrate with standard 0.3 N(0.05 M)ferric nitratesolution,using micro-burette until the medium becomes orange yellow,thisstep being reached after addition of about 4 ml of titrant.Then decolorizethe solution by adding 12.5 ml of absolute alcohol(or 13 ml of 95% alcohol),previously purified by redistillation with lime;stirring is necessary during theaddition.Further continue the titration until the light pink color formeddoes not fade after stirring for 30 seconds when observed over a white surface. In the analyses of sodium fluoride and other fluorine compounds con-taining interfering substances,such as divalent and polyvalent metallic ions,phosphate,silicate,borate,carbonate,sulfide ions and reductants acting on ferricion,it is necessary to separate fluorine from these interfering substances bythe distillation with sulfuric acid according to the method of Willard andWinter(20).Then the distillate is neutralized with dilute sodium hydroxideand adjusted to the proper pH with hydrochloric acid using p-nitrophenol asindicator.The solution is ready for titration as described.But in the caseof absence of these interfering substances except carbonate,for example,inthe determination of the concentration of sodium fluorde solution obtained bythe extraction of the crude product,produced industrially by fusing fluorsparwith sodium carbonate and silica,the above separation of fluorine by dis-tillation is dispensable.The anaIytical results obtained by the proposed method are in goodagreement with those obtained by the lead chlorofluoride process(8),whichis recognized as official method for the determination of fluorine in agriculturalproducts.

本文介绍一容量分析氟的新方法和在工业制品上的应用,并分析了一种工业制备的氟化钠液,所得的结果和氟氯化铅法所得的极为一致。对于影响该分析法准确度的各种因素:指示剂的灵敏度和滴定时适宜的用量、溶液的 pH 值、应加的乙醇量、操作中加乙醇的次序、以及氟离子的适宜浓度,均加以研究并找出适宜的情况。本法用硝酸铁为标准液,水杨酸钠作指示剂,在 pH=3左右作滴定;当溶液呈橙黄色时,加入适量的乙醇,使其浓度在终点时仍不低于50%。如有干扰物质如二价及多价金属离子、磷酸根、矽酸根、硼酸根、碳酸根、硫化物和还原物质可能与三价铁起作用者,均应分离之。

A method for preparing the high acid-consuming-capacity dried aluminium hydroxide powder by the use of alum and soda or other alkali substance as raw material is described. 1) The best results were obtained by using soda as raw material for preparing the alkali solution. 2) The alum solution was added to the alkali solution until pH 5.5-6.5 was reached. 3) The sulfate was removed almost completely by washing with potassium bicarbonate solution(0.4%) before drying. 4) The aluminium hydroxide gel can be dried...

A method for preparing the high acid-consuming-capacity dried aluminium hydroxide powder by the use of alum and soda or other alkali substance as raw material is described. 1) The best results were obtained by using soda as raw material for preparing the alkali solution. 2) The alum solution was added to the alkali solution until pH 5.5-6.5 was reached. 3) The sulfate was removed almost completely by washing with potassium bicarbonate solution(0.4%) before drying. 4) The aluminium hydroxide gel can be dried completely under 100-105℃(ca. 6 hrs.) without influencing the antacid activity. 5) The highest acid-consuming-capacity of the dried powder of aluminium hydroxide gel(free from any free alkali) was determined to be 315.9 ml, i.e. one gram dried sample will neutralize 315.9ml 0.1N HCl.

1.以明礬液倒入碳酸钠溶液中,混合液之酸度须控制为pH6(±0.5)。 2.所得膠体,先用普通水洗滌,继用0.4%碳酸氢钾溶液在抽氣漏斗上洗滌。除去硫酸鹽之手續须一次完成之,烘乾以後即不能重行处理,否则,制酸力急速下降。 3.乾燥可控制在90—110℃(约6—10小时),大量烘乾时应注意湿空氣之排出。 4.产品的制酸力一般为250—280毫/克,最高达315.9毫升/克;硫酸鹽之含量远低於药典规定;游离鹼亦远低於苏联药典之规定。

Observations were made to compare the effect of HCl introduced into the small intestine of dogs on pancreatic secretion in the following three conditions: (1) Acute experiments with barbiturates(pentothal sodium or pentobarbital sodium) as an(?)sthesia; (2) Chronic experimental dogs with Thomas pancreatic fistula; (3) Chronic dogs in(2) an(?)sthetized by means of the same barbiturates as in the acute experiments. The results indicated that in the acute experiments, the latent period of pancreatic secretion...

Observations were made to compare the effect of HCl introduced into the small intestine of dogs on pancreatic secretion in the following three conditions: (1) Acute experiments with barbiturates(pentothal sodium or pentobarbital sodium) as an(?)sthesia; (2) Chronic experimental dogs with Thomas pancreatic fistula; (3) Chronic dogs in(2) an(?)sthetized by means of the same barbiturates as in the acute experiments. The results indicated that in the acute experiments, the latent period of pancreatic secretion was about 3-5 minutes and the amount secreted was usually below 20 drops in the first 30 minutes after the introduction of the acid. But in the case of chronic experiments, the results were quite different. The latent period was shorter, usually less than 2 minutes and the amount of pancreatic secretion was usually 10 times as much as in the acute experiments. Moreover, the pancreatic secretion of the chronic fistula dogs was not changed either in latent period or in amount when under the barbiturate an(?)sthesia. From the above results, it is quite natural to assume that the influence of the barbiturate an(?)sthetics, pentothal sodium and pentobarbital sodium on pancreatic secretion induced by HCl in the intestine of dogs is negligible. The great difference in the pancreatic secretion between the acute and the chronic experiments might, therefore, be due to the operative trauma which is unavoidable in acute experiments. Another observation was made to determine the effect of atropine on pancreatic secretion induced by HCl in chronic fistula dogs. The result showed that atropine distinctly reduced the response of pancreas to the acid. The latent period was increased and the amount of pancreatic secretion was decreased as compared with the result obtained in normal chronic fistula dogs. Hence it is quite suggestive that there might exist a nervous component in the mechanism of pancreatic secretion induced by HCl in the small intestine. We wish to express our gratitude to Comrade for his valuable advice and to professors T. C. Shen and T. F. Liu for their encouragement throughout this work.

本實驗比較急性實驗狗、慢性胰瘻狗和經過麻醉的慢性胰屢狗對於鹽酸注入小腸所引起的胰液分泌量和潛伏期,結果證明: (1)在急性實驗情况下,狗胰腺對鹽酸刺激小腸所引起的胰液分泌量遠較在慢性實驗時為少,且潛伏期較長。 (2)巴比妥類麻醉劑:硫賁妥鈉(sodium pentothal)和戊烷巴比妥鈉(sodiumpentobarbital)對鹽酸所引起的胰液分泌量及潛伏期影響極微。 (3)在急性實驗情况下,由鹽酸所引起的胰液分泌量的減少和潛伏期的加長,似乎不是由於巴比妥類麻醉劑的作用,而可能是由於手術創傷的影響。 (4)注射阿托平後,胰腺對於鹽酸刺激小腸所引起的反應顯著减小,故推测在鹽酸引起胰液分泌的機制中可能有神經反射作用的參與。本工作在进行過程中,承蘇聯專家同志親切地給予指導,并承沈(?)淇、劉曾復二教授关懷和支持,(?)此誌謝。

 
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