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单词 Nitric acid
例句
(1) When nitric acid is poured on copper, a brown vapor gives off.
(2) Nitric acid will dissolve most animal tissue.
(3) The nitric acid assures good electrical conductivity.
(4) The nitric acid solution is then mixed with an organic solvent and the uranium and plutonium are separated from the waste products.
(5) Deposition of nitric acid in particular may contribute to the equation as a fertiliser as well as a pollutant perse.
(6) Results of the autumn and spring nitric acid measurements are shown in Fig. 2, together with total column ozone data.
(7) The major Billingham-based production includes ammonia, nitric acid, urea and both straight nitrogen and compound fertilizers.
(8) The stuff was like nitric acid.
(9) Anhydrous nitric acid is dissociated.
(10) Nitric acid forms hydrates with water.
(11) Nitric acid molecules are linked by hydrogen bonds.
(12) In 1953 the first tactical missile using a storable propellant (nitric acid and carbon-hydrogen fuel), the R-11[sentencedict .com], was created with a range of 270 km.
(13) Methods: In the presence of hydrochloric acid or nitric acid, geranyl sulfone was prepared from geraniol in isopropyl alcohol or THF under reflux conditions for 18 h or 28 h,() respectively.
(14) The solubility of the precursor ceric hydroxide in nitric acid, recycle of crystal mother liquor of ammonium ceric hydroxide, and recovery method for cerium in mother liquor have been investigated.
(15) Some of this increase can be attributed to the evaporation of remaining nitric acid from the condensed phase as temperatures rise.
(16) The men were injured in March last year when seven cubic metres of concentrated nitric acid escaped from a valve.
(17) Some found bathing the patient in a bath of nitric acid to be efficacious!
(18) The XPS spectra of carbon fibers electrochemically oxidized in acetic acid, nitric acid, phosphoric acid, sulphuric acid and ammonium carbonate were fitted by a Gaussian Lorentzian mixed function.
(19) Corrosively medium for chemical production such as sodium hydrate, caustic soda, sulfuric acid, nitric acid, acetic acid, fatty acid.
(20) Oxalic acid was obtained by treating buckwheat husks with dilute nitric acid.
(21) It is lead gray powder with good chemical stability, which is soluble in aqua regia, hot nitric acid and dense nitric acid and insoluble in dilute sulfuric acid and organic solvents.
(22) Lack it, the active of the amine of methylic benzyl nitric acid that causes cancer is strengthened, make its send cancerous action to strengthen.
(23) Aliphatic hydrocarbons can be nitrated even with 13 % nitric acid.
(24) The chemical polishing solution was composed by hydrofluoric acid: nitric acid: additional :1:X.
(25) As the spectroscopic analysis has not been reported and the corro-sioncolor test with nitric acid is not very reliable. This method has resolved the problems of monel alloy for alkanisation uni...
(26) Objective To investigate the effect of decalcification with low-temperature microwave (MW) and nitric acid (NA)on the bone, teeth and other calcified tissue.
(27) The desalting regeneration system is revamped by using the magnesium tail water from the intermittent nitric acid production unit to replace hydrochloric acid as the cation bed regenerant.
(28) The distribution ratios of actinides are very low when aqueous phase is nitric acid.
(29) A salt of a pullulan aminoalkyl ether according to claim 1, wherein the salt -forming acid is hydrochloric acid , hydrobromic acid , sulfuric acid , nitric acid , acetic acid , or oxalic acid .
(30) Conclusion Very satisfactory staining results within relatively short time may be obtained with microwave treatment in nitric acid solation at low temperature for decalcification.
(1) When nitric acid is poured on copper, a brown vapor gives off.
(31) The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid. The method was characterized by fewer equipments, simple operation, low cost and quick yield.
(32) Its main synthesis method is nitration of guaiacol by fuming nitric acid and glacial acetic acid as nitration agent.
(33) Specimens prepared by polishing and etching in a weak solution of nitric acid and alcohol reveal the lamellar structure of alternating plates that forms on slow cooling.
(34) The test results show that the reaction process of decomposition of witherite with nitric acid is the typical mass-transfer control process, in which the hydrogen ion diffuses through liquid film.
(35) In the medium of nitric acid, the trace chloride in the cement concrete was determined by turbidimetry.
(36) The controlling methods of nitric acid tail gas is evaluated, and the ways to reduce the quantity of nitric oxide emission in nitric acid process is explored.
(37) According to the trait of rocket propellant a kind of protective gloves made of composite fluorine rubber is developed which can be used to protect the skin of red fuming nitric acid worker.
(38) Most of traditional polishing process formulas for stainless steel contain chromic acid, hydrofluoric acid,[http:///nitric acid.html] nitric acid and other strongly poisonous chemicals.
(39) Silver azide does not dissolve in water or in nitric acid.
(40) Methods Firstly make waste nitric acid into urea nitrate by chemical synthesis, and then produce industrial explosive power by cool mixing.
(41) And nitric acid salt, nitrite is united in wedlock possibly in human body stomach with amine, form inferior saltpetre amine, this is very powerful carcinogen.
(42) Treatment of the body after psychro-thermal cycles through in vitro experiments with nitric acid silver staining ammoniation, enhancement.
(43) Dissolve a pinch of silver and mercury in a solution of nitric acid, drop in a lump of metal amalgam, and soon a spidery, glittering "Tree of Diana" will form on the glass.
(44) Dissolving sample with nitric acid and hydrofluoric acid, the silicon content of silicon-manganese alloy was made a measurement with ICP-AES method in the hydrofluoric acid-resistant spray devices.
(45) The corn flour is hydrolyzed into glucose by sufouric acid. And after that the glucose, under the catalysis of metavanadate and sufouric acid, is oxidized into oxalic acid by nitric acid.
(46) The experiments have shown that the technology of oxidation degradation with nitric acid and sulfoxidation with sodium sulphite to produce water-reducer of cement with decomposed coal is available.
(47) The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid.
(48) A process of recovery of the nitric acid and nitro compounds from mononitrotoluene (MNT) waste acid by toluene extraction was introduced.
(49) The dependence of the extraction distribution ratios on the concentrations of aqueous nitric acid, extractant, salting-out agent and the temperature was investigated.
(50) And effects of raw materials size, reaction temperature, reaction time and nitric acid dosage on the output and lead chromate content of the product were discussed in detail in this paper.
(51) Black stripes after dip in nitric acid Conversion coating is dull.
(52) Phenols and anilides can be nitrated with very dilute nitric acid.
(53) The macro-kinetics characteristics of decomposition of witherite with nitric acid in a batch reactor are studied.
(54) The carbon fiber-reinforced Polylactide (C/PLA) was prepared for bone fracture fixation, and the carbon fiber was treated by surface soakage with concentrated nitric acid.
(55) Corrosion resistance experiment: salt water spray experiment, experiment, sulphur dioxide experiment, nitric acid hydrogen sulphide experiment, etc.
(56) The ore sample was dissolved in nitric acid. After enrichment and separation with Xanthic ester cotton, the silver was determined by thiocyanometry.
(57) The SERS spectra of a series of cyanine dyes in silver sol and ad- sorbed on silver or copper film etched by nitric acid are reported and compared.
(58) Nitric acid: Inorganic compound, colourless, fuming, highly corrosive liquid, chemical formula HNO 3.
(59) The decalcifying time could be shortened obviously by microwave at low temperature and nitric acid.
(60) Methods The forced swimming was used to set chronic stress model. Using nitric acid deoxidize enzyme method, the NO levels of serum and hippocampus were measured.
(61) Organic phosphorus was turned into phosphoric acid by oxidation in dense vitriol and nitric acid.
(62) Aquatint: It is an etching process on copper or steel by means of nitric acid.
(63) Ahab's alloy is a high ni high molybdenum alloys, in nitric acid chromic acid, sulfuric acid etc oxidizing acids has good corrosion resistance.
(64) Contact with strong oxidizing acids such as nitric acid, chromic acid and so on, due to strong oxidation products will cause brittle hair, discoloration, early damage.
(65) Conclusion Rapid decalcification with microwave and nitric acid at low temperature could get very satisfactory staining results within relatively short time.
(66) Adding concentrated nitric acid, copper dissolves to form a blue solution.
(67) Also free from nitric acid and phosphoric acid, to prevent algae breeding.
(68) Thus the relations between densities of the solution and concentrations of uranyl nitrate and nitric acid are provided for.
(69) Lily powder was pre - treated by nitric acid and perchloric acid before determination.
(70) In this article , the synthesis ofp - tert - acid by using nitric acid as the oxidizing agent was introduced.
(71) In the concentrated nitric acid production, the hazard and control of impurity in the magnesium nitrate solution are introduced.
(71) try its best to collect and build good sentences.
(72) It is widely used as solvent for lubricating oil refining , nitric acid fibrin , vinyl resin and other resin synthesis in dope, oil refining, dyestuff, medicine industry .
(73) Nitracidium and hydronitracidium nitrastes are present in concentrated nitric acid.
(74) Main products of the Joint Chemical concentrated nitric acid and ammonium nitrate.
(75) Comparing the solubility of scheelite and wolframite in dil. nitric acid with those in oxalic acid or in hydrochloride acid-citric acid has been carried out.
(76) The test sample was treated by nitric acid and hydrogen fluoride acid.
(77) Organo mineral compound fertilizers are digested with sulfuric acid hydrogen peroxide and nitric acid perchloric acid, respectively, and then their total potassium content is determined.
(78) A new process that industrial nitric acid reacts with iron chippings and shavings to produce ferrous nitrate solution is presented.
(79) These covalent nitrites are constitutional isomers of the nitro compounds, nitric acid derivatives (R-NO2), in which the bonding is from carbon to nitrogen.
(80) Baesd on theoretical analysis and test, the reason that nitrogen tetroxide has been measured in- accurately in red fuming nitric acid as missile propellant is found out.
(81) The results show that the potassium bichromate plus nitric acid or glacial acetic acid has the best anti-corrosion effect.
(82) The concentration change of nitric acid was detected with a conductivity detector probe in water phase and the phenomena of the interface were recorded by video.
(83) To prevent esophagus cancer, besides do not eat contain carcinogenic substance outside the food of amine of methylic benzyl nitric acid, still ought to complement vitamin B2.
(84) The precipitatation process of rare earth in nitric acid was investigated and the relationship between supersaturation and mean particle size of rare earth oxalate was obtained.
(85) Supported heteropoly acid catalysts give fairly high catalytic activity and selectivity on vapor-phase nitration of benzene and diluted nitric acid and were characterized by ESR.
(86) Methods:Isoquinoline as material was oxidized with fuming nitric acid instead of the reported concentrated nitric acid to synthesize target compound.
(87) Separation of the two components is accomplished by dissolving the frit in dilute nitric acid.
(88) Undissolved in water or ethanol, easily dissolves in inorganic acid(nitric acid, hydrochloric acid), acetic acid and ammonium chloride solution, slightly dissolves in alkali metal carbonate solution.
(89) As the spectroscopic analysis has not been reported and the corro-sioncolor test with nitric acid is not very reliable. This method has resolved the problems of monel alloy for alkanisation units.
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