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flame     
相关语句
  火焰
     Premixed Flame Combustion Instability and Its Active Control
     预混火焰燃烧不稳定性及其主动控制
短句来源
     Research on the Detection Method Based on Image Processing for Furnace Flame
     基于图像处理技术的炉膛火焰检测方法研究
短句来源
     Research on Flame Safety Monitoring and Combustion Diagnosis Methods for Coal Fired Utility Boiler
     电站锅炉煤粉火焰安全监测及燃烧诊断方法研究
短句来源
     Research on the Flame Holding Technology Based on Cavity in Supersonic Combustion
     基于凹腔的超声速燃烧火焰稳定技术研究
短句来源
     The Flame Temperature Distribution Measurement of Solid Propellants
     固体推进剂火焰温度分布测量
短句来源
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     Nonstoichiometric Mgo · (A1_2O_3)_z ultrafine powder and single crystals have been perpared with n =1.0, 1.3, 1.5, 2.0, 2.3, 2.5, 2.7, 3.0, 4.5, and 5. 0 by high temperature solid reaction method and flame fusion method.
     本文运用高温固相反应法和熔生长方法制备了非化学配比的MgO·(Al_2O_3)_n(其中n=1.0,1.3,1.5,2.0,2.3,2.5,2.7,3.0,4.5,5.0)尖晶石微粉及单晶体。
短句来源
     In this research a copper alloy was buildup welded on the sealing surface of the HT20-40 valve by means of MIG and O_2-C_2H_2 flame.
     本文采用MIG和O_2—C_2H_2堆焊方法,在阀门密封处堆焊铜合金。
短句来源
     The analytical method for direct determination of Sm, Eu, Gd in Sm-Eu-Gd concentrationby atomic absorption spectrometry with N_2O-C_2H_1 flame was established in this paper.
     本文制定了N_2O-C_2H_2原子吸收光谱直接测定Sm-Eu-Gd富集物中Sm、Eu和Gd的分析方法。
短句来源
     The characteristic concentration, after 2 minutes of trapping by the fuel-lean flame and the pulsed fuel-rich flame, is 5.2×10~(-4)μg/ml, 78 times more senstive as compared with the FAAS.
     用贫捕集,脉冲富释放法测定0.02μg/mlCu~(2+),捕集2min后测得特征浓度为5.2×10~(-4)μg/ml,比常规FAAS法提高77倍。
短句来源
     After melted by the plasma flame and quenched,the stabilizing phase α-Al 2O 3 is transformed to sub-stabilizing phase γ-Al 2O 3.The tests show that the procedure of the phase transfomation is as following: α-Al 2O 3 plasma flamemelted bodyquenchingγ-Al 2O 3800 ℃ δ-Al 2O 3 1 100 ℃α-Al 2O 3.
     稳定相α -Al2 O3 经等离子流熔融、淬冷后 ,转变为亚稳相γ -Al2 O3 ,经试验确定Al2 O3 的相变历程 :喷涂Al2 O3 粉体经等离子流熔融、淬冷 ,得γ -Al2 O3 ,经 80 0℃焙烧转变为δ -Al2 O3 ,再经 110 0℃热处理 ,转变为α-Al2 O3
短句来源
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  阻燃
     The Study on the Thermal Degradation and Flame Retardant Mechanism of Some Polymer-PAN Fibers, Hemp Fabric, Wool, and Flexible PVC
     纤维(腈纶、麻、羊毛)和软PVC塑料热降解及阻燃机理的研究
短句来源
     Studies on the Relationship of Combustibility and Mechanism of Combustion and Sub-cluster Parameters of Flame Retarded PET and Its Fibers
     阻燃PET及其纤维的燃烧性能—燃烧机理—群子参数之间关系的研究
短句来源
     Synthesis and Application of Intumescent Flame Retardants for Polyethylene and Their Action Mechanism
     聚乙烯用新型膨胀型阻燃剂的合成与应用及阻燃机理研究
短句来源
     The Preparation and Properties of Flame Retardant PBT and Its Alloys/Clay Nanocomposites
     阻燃PBT及其合金纳米复合材料的制备与性能研究
短句来源
     Study on the Preparation and Mechanism of Flame Retardant and Cross-linked Polyethylene Composites
     阻燃和交联聚乙烯复合材料的制备与机理研究
短句来源
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  火焰的
     A PDF Simulation of the Lifted Turbulent H_2/N_2 Jet Flame
     抬举湍流H_2/N_2射流火焰的PDF模拟(英文)
短句来源
     One-dimensional turbulence simulation of jet H_2/N_2 diffusion flame
     H_2/N_2射流扩散火焰的一维全尺度湍流模拟(英文)
短句来源
     The length and structure of coupling region are effectively controlled by controlling the temperature and size of flame and stretching speed,so the high performance 980/1550 PMF WDM is successfully manufactured with a 1 550 nm PMF and a H11060 single mode fiber(SMF).
     在FBT台上,通过控制火焰的温度和宽度以及拉伸速度,有效控制WDM的拉伸长度和耦合区结构,用1 550 nm的PMF和H11060单模光纤(SMF)成功研制了高性能的980/1550 PMF WDM。
短句来源
     (4) Calculation showed the charge flux of plasma was about 10~(-5)c·mm~(-2)·s~(-1,)the average kinetic energy of single particle was about 10~3~10~4eV, it was larger than flame's (10~2eV).
     (4) 计算得到等离子体流的电荷通量在10~(-5)c·mm~(-2)·s~(-1)数量级,等离子体流中粒子的平均动能在10~3~10~4eV,大于燃烧火焰的计算值(10~2eV)。
短句来源
     Exploration on Cause Analysis and Comprehensive Treatment for the Emergence of Critical Flame in 2×300MW Generating Sets
     2×300MW 机组产生临界火焰的原因分析和综合治理探讨
短句来源
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  flame
According to combustion phenomenon, polymer 4 was supposed to be processed with a good flame-retardant property because of its excellent crosslinked structure during pyrolysis or combustion.
      
In order to improve wood properties of triploid clones of Populus tomentosa, urea-formaldehyde (UF) resin was compounded with nano-SiO2, coupling agents and flame retardants in different ways to prepare five kinds of modifiers.
      
Results show that all of the modifiers reduced water absorption of poplar wood and enhanced flame resistance and hardness.
      
Identifying combustion intermediates in premixed MTBE/gasoline/oxygen flame probed via synchrotron radiation
      
In this paper, the results to identify combustion intermediates in low-pressure premixed gasoline/oxygen flame with the synchrotron radiation were reported.
      
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Ⅰ. The Coal Classification Method for the Chinese Coals. (а) The Ultimate Analysis Graphical Coal Classification Method-Use the volatile Mateer on Combustible basis Vr as abscissa and the simplified coal characteristic coefficient as ordinate. (б) Proximate Analysis Graphical Coal Classification Method-Use the volatile matter on combustible basis VT as abscissa and the fixed carbon on ash free basis F. C.w Ⅱ. The Ranks (kinds) of the Chinese Coals-By using the two above mentioned graphi- ed coal classification...

Ⅰ. The Coal Classification Method for the Chinese Coals. (а) The Ultimate Analysis Graphical Coal Classification Method-Use the volatile Mateer on Combustible basis Vr as abscissa and the simplified coal characteristic coefficient as ordinate. (б) Proximate Analysis Graphical Coal Classification Method-Use the volatile matter on combustible basis VT as abscissa and the fixed carbon on ash free basis F. C.w Ⅱ. The Ranks (kinds) of the Chinese Coals-By using the two above mentioned graphi- ed coal classification methods, the Chinese coals available with ultimate analysis or proximate analysis data can be easily classified into the following different kinds as known internationally: -anthracite (A), semi-athracite (T), semi-bituminous ( C), coking coal (k), steaming fat coal ( ), gas coal ( ), long flame (candle) coal ( ) and lignite coal ( ), as tabulated on Table - 4. Ⅲ. The Properties of Chinese Coals. (а) The composition of the Chinese Coals - with the exception of ash and sulfur which vary irregularly, the other constituents. like carbon, hydrogen, oxygen, nitrogen and analytical moisture vary regularly with the variation of the vodatile matter on combustible basis V in the different stage of carbonization. (б) The Reltation between the ultimate analysis and proximate analysis for the Chinese Coals- In the bituminous coal region, the data of proximate analysis can be transferred to the ultimate analysis proximately according to the straight line formula, as for the bituinous coal. The other constituents like H, O and N, S can also be obtained by the straight line formulas as shown on the graph. (в) The Heating Value of Chinese Coals - The Heating Value of Chinese Coals; when only ultimate analysis data is available, can be checked by using the Mendeleef formula; when Duly the proximate analysis data is available, the heahng value can be checked by the Goutal Formula. When illers is only the ultimate data without any bomb calorimeter, the heating value can be obtained by the following empirical formulas:(p) The Coking Property of the Chinese Coals---The ebbing property can be represent6d by' foe coking coeffident as suggested by the author, the ratio of hydrogen to oxygen on combustible. basis (%). With the exception of anthraede, semi--anthracite and liana, ' which will have the ash in powderform, when burned, the other bituminous coals like (1) Semi--bituminous and part of the coking coal, when Vr- 16 ~ 24 7o and (%) = 0.90 1 .8, the ash after combustion will become softly caked; (2) for coking coal, Steaming fat Hr coal and gas coal, when Vr~25-47 and M~0. 58-1 .2, the ash after combustion will become strongly caked; (3) FOr gas coal and long flame coal, when Vr~31 ~46 ac and aam: =0. 34-0. 50, the ash will become softly caked. f {if) The Combustion Characteristics of Chinese Coals -- The combustion characteristics vary with the kind of coal. Which kind of coal is suitable for what kind of industrial use and which type of furnace is suitable for burning what kind' of 'coal,. all depends uPOn the rank, composition and combustion charact6rislics of the coal. F6, economy, it is necessary >to burn the poor quality coal nearby and the problem of caking inside the furnace resulting from poor quality coal muSt be properly solved. ' (in) The ash Fusion point of Chinese Coals -- The ash composition affects the fusion point. greatly. The change in ash composition will of feet the fusion poillt. Thus increasing the met,ilie oxides in the coal ash liko FeZO3, CaO and MAO ate. will raduce the fusion point and will fadlitate the ash disposal in fluid form. On the other hand, whother increasing 'the kaolin (fire clay) in the ash composition will raise the ash fusion point or not is a problem worthy for further investigation and research. ' '. It may be reaseonably assumed as suggested by the auther that the coal ash is mainly consisted of kaolin (Al.O, ZFios ZHZO) + free SiOZ + different motailic odddes (FavOr, CaO and MgO, etc ). When coal is burned, the free SiOZ will combine with some of the metallic

(Ⅰ)中国煤的分类法 (а)元素分析图解分类法─—横坐标采用纯燃质挥发物百分数V而纵坐标则用简化特性系数 (б)实用分析图解分类法─—横坐标采用纯燃质挥发物百分数V而纵坐标则采用去灰定炭百分数F.C。 (Ⅱ)中国煤的分类类别 根据上列二个新的图解分类方法,中国煤在有元素分析或实用分析数据后,即可从图解上求得分类类别,中国煤按照国际间一般分类标准,可以分为无烟煤,瘠煤、蒸汽结焦煤,炼焦煤,蒸汽肥煤,瓦斯煤,长火焰烟煤,褐煤等,已列在中国煤突用分析数据表的最后一项。 (Ⅲ)中国煤的特性 (а)中国煤的成分─—中国煤的成分,除灰分与硫磺的变化无规律外,其他成分如碳素,氢素,氧素,氮素,分析水分等的变化极有规律,此外煤的工作质水分则受外界气候影响而变化,但吸收水分(即分析水分)划与煤的含氧量有失,而变化很有规律。 (б)中国煤的元素分析与实用分析的关系─—中国煤的实用分析数据,在烟煤区域,可以按照直线关系公式,转变力元素分析的近似数据。例如其他成分如H,O及N S等亦可从直线公式(如图上所示)求得平均数值。 (в)中国煤的发热量──中国煤的发热量,若有元素分析数据,则应用门捷列夫公式来计算核对;若仅有实用分析数据,则...

(Ⅰ)中国煤的分类法 (а)元素分析图解分类法─—横坐标采用纯燃质挥发物百分数V而纵坐标则用简化特性系数 (б)实用分析图解分类法─—横坐标采用纯燃质挥发物百分数V而纵坐标则采用去灰定炭百分数F.C。 (Ⅱ)中国煤的分类类别 根据上列二个新的图解分类方法,中国煤在有元素分析或实用分析数据后,即可从图解上求得分类类别,中国煤按照国际间一般分类标准,可以分为无烟煤,瘠煤、蒸汽结焦煤,炼焦煤,蒸汽肥煤,瓦斯煤,长火焰烟煤,褐煤等,已列在中国煤突用分析数据表的最后一项。 (Ⅲ)中国煤的特性 (а)中国煤的成分─—中国煤的成分,除灰分与硫磺的变化无规律外,其他成分如碳素,氢素,氧素,氮素,分析水分等的变化极有规律,此外煤的工作质水分则受外界气候影响而变化,但吸收水分(即分析水分)划与煤的含氧量有失,而变化很有规律。 (б)中国煤的元素分析与实用分析的关系─—中国煤的实用分析数据,在烟煤区域,可以按照直线关系公式,转变力元素分析的近似数据。例如其他成分如H,O及N S等亦可从直线公式(如图上所示)求得平均数值。 (в)中国煤的发热量──中国煤的发热量,若有元素分析数据,则应用门捷列夫公式来计算核对;若仅有实用分析数据,则可用古?

A colorimetric method for the determination of antimony in the range 0.1 to 3.0μg per milliliter blood is described. The time needed for the destruction of organic matter is shortened to 8—12 minutes. The proposed method is as follows: Accurately transfer 1 ml of blood sample to a hard glass test tube (25×150 mm.), to which 1 ml of conc. HNO_3 is then added. Heat gently with a small flame till the solution changes to amber color. Add 0.5 ml conc. H_2SO_4 and heat again carefully until dense white fume...

A colorimetric method for the determination of antimony in the range 0.1 to 3.0μg per milliliter blood is described. The time needed for the destruction of organic matter is shortened to 8—12 minutes. The proposed method is as follows: Accurately transfer 1 ml of blood sample to a hard glass test tube (25×150 mm.), to which 1 ml of conc. HNO_3 is then added. Heat gently with a small flame till the solution changes to amber color. Add 0.5 ml conc. H_2SO_4 and heat again carefully until dense white fume is evolved. If the solution is not clear, add a few more drops of HNO_3 and heat repeatedly till a clear colorless solution is obtained. Cool, add 1 ml NaCl solution and 0.5 ml NaNO_2 solution, shake for 2 minutes, then add 1 ml of urea solution. Transfer the mixture to a separatory funnel containing 10.0 ml benzene. Wash the test tube with three portions (5 ml) of distilled water, add 10 drops of malachite green reagent solution and shake the mixture immediately for 5 minutes. Separate the benzene layer in a centrifuge tube and centrifuge 3 minutes to separate the suspended droplets of water. Transfer the benzene solution into a 10 cm cell and measure the extinction with an Ilford 607 filter, using benzene as blank.

作者等提出了血液中有机质的快速破坏法及采用孔雀綠比色法测定血样中微量锑。本法破坏血样所需时間为10分鐘左右,所需血样为1毫升。致謝:本文承儲俊民同志供給一部分資料及协助,謹此志謝。参加此項工作者尚有楊松成同志。

A simplified volumetric method for the determination of sulfur in organic compounds is described. The results obtained by this method are in agreement with those obtained by the gravimetric method, The method is stated as following: Weigh accurately a sample containing 30—75 mg SO_4~- into a nickel crucible containing 1 g. of KNO_3 and 8 g. of KOH. Heat the crucible carefully with a small flame until the contents melt, increase the heat gradually until the decomposition is complete. Leach the melt with...

A simplified volumetric method for the determination of sulfur in organic compounds is described. The results obtained by this method are in agreement with those obtained by the gravimetric method, The method is stated as following: Weigh accurately a sample containing 30—75 mg SO_4~- into a nickel crucible containing 1 g. of KNO_3 and 8 g. of KOH. Heat the crucible carefully with a small flame until the contents melt, increase the heat gradually until the decomposition is complete. Leach the melt with water, acidify with HCl and heat gently until bubbles cease to evolve. Filter, dilute the filtrate to about 60 ml. and after neutralizing with 6 N NH_4OH, add 0.2 ml. 6 N HCl. Heat to 70℃, add gradually the benzidine hydrochloride reagent to precipitate the sulfate in the solution. After cooling in an ice bath for 1 hour, the precipitate is filtered from the solution. Suspend the precipitate in water, heat to 80℃ and titrate with 0.1 N NaOH solution, using phenolphthalein as indicator.

测定一般有机化合物中的硫含量,可將有机物先用KOH—KNO_3破坏,使成硫酸联苯胺沉淀后,再滴定其中的硫酸根。应用本法可测定相当于30—75毫克硫酸根的含硫有机化合物,所得結果准确(表1,3)。平均誤差为±0.11%(表2),操作比重量法简单,所费时間亦少,因此可作为测定有机物中硫含量的快速方法。

 
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