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of powder
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  粉末
     Study on Crack Growth Life of Powder Metallurgy Superalloy Turbine Disk Containing Inclusions
     含夹杂粉末高温合金涡轮盘裂纹扩展寿命研究
短句来源
     Levelling of Powder Coatings
     粉末涂料的流平问题
短句来源
     The Development and Applications of Powder Metal Iurgic Antifriction Materials
     粉末冶金减摩材料的研制与应用
短句来源
     IMPROVED CRITICAL CURRENT DENSITY OF POWDER METALLURGY PROCESSED Nb_3Sn COMPOSITE WITH ADDITIVE Ti
     Ti添加元素改善粉末冶金Nb_3Sn的载流性能
短句来源
     COMPUTER SIMULATION OF ESR SPECTRA OF POWDER OR FROZEN GLASS SYSTEM WITH S=1/2
     S为1/2体系粉末或冷冻玻璃态电子自旋共振谱的模拟
短句来源
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  了粉末
     Microstructure and mechanical properties of powder forging steel 12Cr2Ni4A and 18Cr2Ni4WA are described in this paper.
     讨论了粉末锻造钢12Cr2Ni4A和18Cr2Ni4WA的组织与性能。
短句来源
     The tribological properties of Al2O3/CuSn6Pb6Zn3 bronze composite material made of powder metallurgy technology have been investigated.
     研究了粉末冶金法制备的Al2O3/CuSn6Pb6Zn3青铜复合材料的摩擦学性能.
     The tropism theory of magnet in magnetic field and the best size of powder Tb0.27Dy0.73Fe2 are investigated.
     从磁场取向和铁磁体磁化出发,研究了粉末Tb0.27Dy0.73Fe2的最佳磁粉粒度.
短句来源
     The oxidation behavior of powder metallurgical Ag-Cr alloys at 700-800 ℃ in 0.1 MPa 02 was studied.
     研究了粉末冶金 Ag-35Cr(PM Ag-35Cr)和Ag-69Cr(PM Ag-69Cr)合金在700-800℃及0.1 MPa纯氧气中的氧化.
短句来源
     The Fe-2Mn-2Cu-Mo-C-P powder is prepared by means of high-energy ball-milling method. The variation forms of powder and the effect of ball-milling time on green density and sintered density are studied.
     采用高能球磨法制备Fe-2Mn-2Cu-Mo-C-P粉末,研究了粉末形态的变化规律,以及压坯密度、烧结密度与球磨时间的关系.
短句来源
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  对粉末
     B4C and B4C/TiB2 composite powder comprising 10-20vol%TiB2 are synthesized with the temperature of 1650℃ to 1800℃ by carbothermal reduction processing using industrial Boron acid , carbon black and TiO2powder as starting materials, and B/C mole ratio of starting materials is ascertained, thermodynamics temperature of reaction is calculated and the effect of ball milling techniques on the synthesis of powder are discussed.
     以工业硼酸、碳黑及TiO_2为原料,经碳热还原法于1650~1800℃合成了纯B_4C及TiB_2含量分别为10~20vol%的B_4C/TiB_2复合粉末,同时确定了原料B/C摩尔比,进行了热力学分析并探讨了球磨工艺、TiB_2的生成对粉末合成的影响。
短句来源
     DPIV(Digital Particle Image Velocimetry) technology was used to observe velocity fields and concentration fields of powder streams.
     首次结合数字粒子图像测速技术(DPIV)设计了对粉末流束的速度场和浓度场的试验方案,并实际检测了在不同工作状态下的粉末流束的速度场和浓度场。
短句来源
     In this work, inelastic neutron scattering spectra of powder CeOs_4Sb_ 12 sample were collected at different temperatures using LAM-D neutron spectrometer at KEK pulsed neutron source.
     当用LAM-D中子谱仪对粉末CeOs4Sb12进行测量时,可以得到不同温度下CeOs4Sb12的非弹性中子散射谱.
短句来源
     The obtained resin is suitable for the manufacturing of powder coatings, with lower crystallinity, Mw 2000~5000, clear and light color, higher Tg(53~63℃ ), adquate softening point (95~110℃ ),acid value 3~8 and hydroxy value 30~45. The guide formulation, coating properties and application conditions of the polyurethane powder coating were given.
     此树脂对粉末涂料制造工艺适应性强,其结晶度低,数均分子量2000~5000,色泽浅而透明,玻璃化温度较高(53~63℃),软化点适中(95~110℃),酸值3~8,羟值30~45。
短句来源
     1. ATO nano-sized powder was prepared by the method of alkoxides hydrolysis and the effect of technology parameters such as: reflux time, hydrolysis temperature, hydrolysis pH, calcination temperature and dispersants on microstructure of powder was investigated in detail.
     1.详细考察了醇盐水解法制备ATO纳米粉末过程中工艺参数如:回流时间、水解温度、水解pH值、热处理温度和分散剂对粉末微观结构的影响。 为了改善ATO纳米粉末的单分散性能,同时考察了外加超声波水解、水解产物共沸蒸馏和纳米粉末醇热处理对粉末单分散性的影响,找出了最佳工艺条件。
短句来源
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  “of powder”译为未确定词的双语例句
     Research on Mechanism of Preparing Nano-metal Powder Materials by Hydrogen-plasma Method and Lubrication Properties of Powder
     纳米金属粉体材料的氢等离子体制备机理及其润滑减摩特性研究
短句来源
     Inverstigation of Electrical Capacitance Tomography and Its Application in Design of Powder Weighing Feeder System
     电容层析成像技术及其在粉料喂料系统设计中的应用研究
短句来源
     A New Process of Coking and Gasification of Powder Coal by Rapid Heating(Ⅰ)
     粉煤快速焦化气化新工艺的研究(Ⅰ)
短句来源
     INJECTION METALLURGY ABROAD——TECHNIQUE OF POWDER INJECTION IN LADLE
     国外喷射冶金——钢包喷粉技术
短句来源
     Theoretical Study on the Thermal Efficiency of Powder Preheater
     粉体预热器热效率的理论研究
短句来源
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  of powder
The mechanical treatment of a number of powder metals (Al, Ni, Fe, Cu, Ag, and W) was investigated.
      
Production of Powder Electroluminophors Based on Zinc Sulfide under Combustion Conditions
      
Numerical Simulation of Manufacturing Silica Glass Blocks by Melting of Powder Batch
      
This paper reports on the results of investigations into the compactibility and structure of powder materials based on lithium-containing spinels that have been considered promising candidates for electrodes of lithium-ion batteries.
      
A Setup for Studying the Low-Temperature Thermal Conductivity of Powder Samples
      
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This communication reports the result of a study of Nelson method with thepurpose of being applied to the determination of nitrates in fresh waters. Accordingto our findings, firstly, a trace of copper sulfate should be added to the acetic acidin order to enhenco the sensitivity and roproducibility; secondly, nitrites should beremoved by using of sodium azide if it is present together with nitrate in the sample. The method may be summerized as follows: To 8 ml of water sample in a 15-ml centrifuge tube add 2...

This communication reports the result of a study of Nelson method with thepurpose of being applied to the determination of nitrates in fresh waters. Accordingto our findings, firstly, a trace of copper sulfate should be added to the acetic acidin order to enhenco the sensitivity and roproducibility; secondly, nitrites should beremoved by using of sodium azide if it is present together with nitrate in the sample. The method may be summerized as follows: To 8 ml of water sample in a 15-ml centrifuge tube add 2 ml of acetic acid reagent A which contains 16.3 μg Cu~(++)in the form of copper sulfate. Then add 0.6 g of powder reagent, stopper, shake for1 1/2 min., and then centrifuge for 10 rain (4, 000 RPM). Pour the clear solutioninto an absorption cell and take reading colorimetrically with 515 mμ filter. The proposed method may be applied to samples containing nitrates as low as0.02 ppm and is more rapid and accurate than phenol-disulfonic acid process whichis recognized officially.

本文叙述水中微量硝酸盐的快速测定法。主要采用Bray之粉剂,加入硫酸铜作催化剂(Cu~(++)16.3微克/10毫升)和加长振荡时间控制硝酸盐的还原程度,致使灵敏度增加。用光电比色计可测至0.02 ppm硝酸根中之氮,用纳氏管可到0.005 ppm。再现性及稳定性均好。误差不超过5%。

A quantitative spectral method is usod to determino the various impurities contained in the 99.99% pure antimony. The antimony metal is ground to powder form as sample. A cortain amount of chemical salt, one of its component is the impurity element to be determined, in the form of powder is added to the sample, to secure a series of standards by several times of dilution. All the samples and standards are placed in the respective craters drilled on carbon rods. Each sample is photographed for five times...

A quantitative spectral method is usod to determino the various impurities contained in the 99.99% pure antimony. The antimony metal is ground to powder form as sample. A cortain amount of chemical salt, one of its component is the impurity element to be determined, in the form of powder is added to the sample, to secure a series of standards by several times of dilution. All the samples and standards are placed in the respective craters drilled on carbon rods. Each sample is photographed for five times by a Zeiss Qu-24 medium size quartz spec-trograph in same spectral plate. The result is obtained by linear interpolation method. The interrupted arc with longest interrupted time and exposure time is found to be a suitable source.

本文讨论用光谱定量分析法来测定99.99%纯锑中各种杂质的含量。金属锑磨成粉状试样,渗入定量的待测金属盐后,再经逐次冲淡以制备一组标准试样。各个试样分别填在若干碳棒的小孔中,用蔡司Qu-24中型石英摄谱仪摄谱;每种试样及标准试样各摄五次于同一谱片上,利用渗入杂质法计算结果。最佳的激发光源为使用最长的曝光时间及间歇时间的间歇电弧。分析线对则按照通常方法选定。 对钙、硅、镁、铜、铁、铝及铅等七种元素得到满意的分析结果,杂质含量范围为10~(-5)—10(-6)。在粗略的估计下,实验误差不超过30—50%。

The dispersion-strengthening phenomenon in an austenitic heat-resisting steel(ЭИ257)has been studied.The specimens are composed of powder ЭИ 257,blended with Al_2O_3,MgO,ThO_2,ZrO_2,or Nb_2O_5.The changes in hardness,at room or high temperatures,of the speci-mens with various compositions,show that the dispersion-strengthening effect in the steelis quite remarkable.The experiments gave the following results:(1)When a heat-resisting steel(ЭИ 257)is dispersion-strengthened with oxidepowder,its heat-resisting...

The dispersion-strengthening phenomenon in an austenitic heat-resisting steel(ЭИ257)has been studied.The specimens are composed of powder ЭИ 257,blended with Al_2O_3,MgO,ThO_2,ZrO_2,or Nb_2O_5.The changes in hardness,at room or high temperatures,of the speci-mens with various compositions,show that the dispersion-strengthening effect in the steelis quite remarkable.The experiments gave the following results:(1)When a heat-resisting steel(ЭИ 257)is dispersion-strengthened with oxidepowder,its heat-resisting temperature for comparable hot hardness may be increasedfrom 650℃ to 900℃.(2)Al_2O_3 is the best among the five oxides,and 8—10 volume percent Al_2O_3 isthe best of all.(3)Dispersed oxide raises the recrystallization temperature.

在金属基体中加入第二相氧化物一般都能大大提高高温强度.许多工作者已对于Al,Mo,Cr,Ni-Cr,Mg,Co,Fe和奥氏体钢等材料作出了一些结果.这些结果都表明在金属基体中加入氧化物是一种提高耐热性的较好途径.我们用晶界腐蚀法将ЭИ257耐热钢制成粉末,再用粉末冶金方法将这种钢粉掺混少量氧化物粉末作成试样,在室温至900℃间进行不同温度的硬度测量。结果表明,以达到同一热硬度为标准,含氧化物的試样比不含氧化物的其温度可提高250℃左右.又将上述试样形变50%后经过不同温度的退火处理,测量处理后的室温硬度,结果也表明氧化物的加入可以阻止形变基体的回复和延缓再结晶的进行.

 
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