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  burning
     Effect of Some Compounds on HTPB Composite Propellant Burning Rate Pressure Exponent
     某些化合物对HTPB复合推进剂速压力指数的影响
短句来源
     Application of Bluff-Body Stabilizer in Boilers Burning Bituminous Coals of High-Ash Content
     钝体稳器在用高灰分劣烟煤锅炉上的应用
短句来源
     Determination of the DINA, TA and C: in a Slow Burning Propellant by Reversed-Phase HPLC
     HPLC测定缓药中三醋精(TA)、吉纳(DINA)及二号中定剂(C_2)
短句来源
     Analysis of Dynamical Character of the Laser Tracking Apparatus of Burning Surface for Solid Propellant
     激光药条面跟踪测量装置的动态特性分析
短句来源
     REVIEW OF BURNING RATE CHARACTERISTICS AND COMBUSTION MECHANISMS FOR NITRAMINE COMPOSITE PROPELLANTS
     关于硝胺复合推进剂速特性和烧模型的述评
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  fuel
     THE SELECTION OF PARAMETERS OF THE TORQUE CONTROL DEVICE IN THE DONGFANGHONG 390—TYPE FUEL INJECTION PUMP
     东方红390型油泵校正装置的参数选择
短句来源
     RADIOCHEMICAL DETERMINATION OF BURNUP OF NUCLEAR FUEL WITH ~(137)Cs AS MONITOR
     用~(137)Cs为监测体的放化法测定核料的
短句来源
     ~(10)B Burnup Determination in Boron Stainless Steel Tube of Discharged Fuel Using Mass Spectrometer
     反应堆卸料硼钢管中~(10)B 耗质谱测定
短句来源
     Present Status and Prospect on High Burnup Fuel for Foreign Pressurized Water Reactors
     国外压水堆高料发展现状及前景
短句来源
     EQUIVALENT TEST OF PLUNGER FUEL PUMP
     柱塞式油泵的等效试验研究
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  combustion
     Researches on Combustion and Processes of High Boron Content Boron-Based Fuel-Rich Solid Propellants
     高含硼富固体推进剂工艺和烧性能研究
短句来源
     Study on Fuel-Air Mixture Formation and Combustion Process in Internal Combustion Engine of Premixed Charge Compression Ignition
     预混合压发动机混合气形成与烧过程研究
短句来源
     Study on Primary Combustion of Boron-based Fuel-rich Propellant
     含硼富推进剂一次烧研究
短句来源
     Theoretical and Numerical Study on the Ignition and Combustion Process of HCCI Engines
     均质压(HCCI)发动机着火与烧过程的理论与数值研究
短句来源
     Numerical Simulation of Catalytic Combustion and Its Application to HCCI Engines
     催化烧的数值模拟及其在均质压(HCCI)发动机中应用的基础研究
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  “燃”译为未确定词的双语例句
     Influences of Gravity on Lean Premixed V-Flames of Weak Turbulence
     重力对稀弱湍流预混V形火焰的影响
短句来源
     Studies on the NO_x Storage-reduction Catalysts under Lean-burn Conditions
     稀发动机尾气NO_x存储-还原催化剂研究
短句来源
     Study on the Performance of A New Cycle in Direct-Fired Absorption Chiller
     新型循环直机性能研究
短句来源
     Study on Automobile Exhaust Catalysts under Lean-burn Conditions
     贫条件下汽车尾气净化催化剂的研究
短句来源
     Selective Catalytic Reduction of Nitrogen Oxides under Lean-Burn Condition over Fe-Mo/ZSM-5 Catalysts
     贫条件下Fe-Mo/ZSM-5催化剂上氮氧化物的选择性催化还原研究
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  burning
A total of 20.7% of carbon storage in the soil (0-45 cm) of burnt areas was lost 40 days after burning.
      
Pyrolytic characteristics of burning residue of fire-retardant wood
      
In order to investigate the pyrolytic characteristics of the burning residue of fire-retardant wood, a multifunctional fire-resistance test oven aimed at simulating the course of a fire was used to burn fire-retardant wood and untreated wood.
      
Samples at different distances from the combustion surface were obtained and a thermogravimetric analysis (TG) was applied to test the prrolytic process of the burning residue in an atmosphere of nitrogen.
      
Human disturbance, especially slash-burning and site preparation, was another factor leading to the decrease.
      
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  fuel
It is necessary to select the catalyst with proper Pt loading when the anode of a direct-methanol fuel cell is prepared.
      
The present paper summarizes the recent technical progresses in large process plants and the aviation industry, micro chemo-mechanical systems, fuel cells, high-temperature electronics, and packaging and coating technologies.
      
Combustion and emissions of the diesel engine using bio-diesel fuel
      
The combustion and heat release of engines using diesel fuel and bio-diesel fuel have been investigated.
      
The economic performance and emission features of diesel engines using diesel fuel and bio-diesel fuel are compared.
      
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  combustion
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.
      
Preparation of nanometer MgO by sol-gel auto-combustion
      
Nanometer MgO was prepared via a sol-gel auto-combustion technique using magnesium nitrate as raw material and citric acid as chelating agent.
      
By studying the different TG curves of magnesium citrate gel prepared by different methods, we found that a combustion process occurred and the nitrate ions acted as an oxidant in the combustion process.
      
TEM photographs of synthesized powders from the sol-gel auto-combustion showed that the crystallites were uniform in size.
      
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A spectrographic procedure for determining copper in concentrated iron ores has been worked out for routine analysis. The powder method is found to be satisfactory with a medium quartz spectrograph and an activated a. c. arc between carbon electrodes as light source. In order to minimize erratic burning of the sample, the electrodes are pre-burned for one minute and then loaded with a mixture of equal weight of the ore sample and carbon powder. The analysis pair of lines chosen are: Cu 2824.369- Fe 2824.67 for...

A spectrographic procedure for determining copper in concentrated iron ores has been worked out for routine analysis. The powder method is found to be satisfactory with a medium quartz spectrograph and an activated a. c. arc between carbon electrodes as light source. In order to minimize erratic burning of the sample, the electrodes are pre-burned for one minute and then loaded with a mixture of equal weight of the ore sample and carbon powder. The analysis pair of lines chosen are: Cu 2824.369- Fe 2824.67 for copper contents ranging from 0.05 to 0.3%, and Cu 2824369- Fe 2828.813 for those between 0.3 and 1.0%. The results obtained spectrographically have been checked by wet chemical analysis, amongst 110 samples 80% of which the two methods checked within 0.02%.

我们尝试用光谱的方法协助解决分析大量铁矿精矿试样中微量铜(O.05-0.1%)的问题。采用了交流电弧碳电极粉末法,应用现有的设备(中型光谱仪、不纯碳电极、质量低的照相板)进行试验,找出了比较适当的激发条件和分析线对。把空白碳电极加以预并在铁矿试样中搀入适当分量的碳粉,可以基本上消减样品在烧中的喷爆现象。根据样品的烧曲线的研究,选择了适当的曝光时间,使分析的结果不受样品所含铜的化学组成状态的影响。 所选定的分析线对当含铜量在0.05-0.3%的范围内时是Cu2824.369-Fe2824.67,当含铜量在0.3-1.0%的范围内时是Cu2824.369-Fe2828.813。根据所得的两条定标曲线作了110个样品的分析,光谱分析结果与化学分析结果的差值在0.02%以下的约占分析样品总数的80%左右。关于含铜量为0.05-0.3%的样品,光谱分析已经可以代替化学分析,并节省大量的人力和物资。

In the spectrochemical analysis of high speed steels with a small current activated a.c. arc (after Aбрамсон), the results of analysis were found to be affected by different previous heat-treatments given to the steel samples. To study this effect we selected 10 chromium steel samples of different carbon content. Spectrochemical analysis of these samples under different procedures of heat treatment shows that with an a.c. arc (5 amp.) the results of analysis of Cr for annealed and for hardened samples of the...

In the spectrochemical analysis of high speed steels with a small current activated a.c. arc (after Aбрамсон), the results of analysis were found to be affected by different previous heat-treatments given to the steel samples. To study this effect we selected 10 chromium steel samples of different carbon content. Spectrochemical analysis of these samples under different procedures of heat treatment shows that with an a.c. arc (5 amp.) the results of analysis of Cr for annealed and for hardened samples of the same steel are different and the difference increases with the increase of carbon content. We are inclined to think that in a low energy light source, the evaporation and the excitation of the alloying elements vary according to the existing form of carbon and this directly affects the results of spectrochemical analysis. The magnitude of this effect is different for different alloying elements, it is considerable in the case of Cr but is inappreciable in the case of Mn and Si.

我们用爱氏光源(低电流交流电弧)作高速钢的光谱分析时,发现样品的组织结构对于分析结果有影响。为了对这个现象得到进一步的了解,我们选择了10种含碳量不同的铬钢进行热处理试验和光谱分析。一系列实验的结果指出,用小电流(5安)电弧光源时,铬的光谱分析结果由于试样是退火组织或淬火组织而有差别,这个差别又随着钢中含碳量的增加而增加。我们认为,这种影响是由于碳在试样中存在状态的不同所引起的。在低功率光源中,这种不同使合金元素被蒸发和被激发的情况有所差别,因而就影响了光谱分析的结果。这种影响由于合金元素之不同而有程度上的不同,对铬的影响很显著,对锰和矽的影响则很小。此外,所选择的分析线对是弧线还是火花线,对于这种组织结构的效应也有显著的影响。 曾经进行了一些消除组织结构影响的实验。发现在应用低功率光源时,增加预时间并不能消除这个效应。用火花光源或大电流(8安)电弧光源时,这种影响大为减小。

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...

(Ⅰ)中国煤的分类法 (а)元素分析图解分类法─—横坐标采用纯质挥发物百分数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?

 
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