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determination of surface
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  测量表面
     The quantitative determination of surface topography based on differe ntial contrast method
     基于微分相衬方法定量测量表面微观形貌
短句来源
     Determination of surface roughness by correlation of laser speckle in real time
     用激光散斑相关方法实时测量表面粗糙度
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  “determination of surface”译为未确定词的双语例句
     THE TECHNIQUE FOR DETERMINATION OF SURFACE CONTAMINATION BY URANIUM ON U_3Si_2-Al PLATE-TYPE FUEL ELEMENTS
     U_3Si_2-Al板型燃料元件表面铀污染量检测技术
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     Determination of surface wave magnitude M_S and systematic error analysis for regional digital seismic network
     区域数字地震台网面波震级M_S测定与系统误差分析
短句来源
     DETERMINATION OF SURFACE WAVE MAGNITUDE IN THE EPICENTER △<20°
     震中距△<20°面波震级的测定
短句来源
     ②Determination of surface antigen of embryonic MSCs: the surface antigens of MSCs were positive for the markers CD105, CD29 and CD44, while were negative for CD34, CD45, CD19, CD106 and HLA-DR.
     ②胎盘间充质干细胞的表面抗原测定结果:胎盘间充质干细胞表面抗原CD29,CD44,CD105阳性; CD34,CD45,CD19,CD106以及HLA-DR阴性。
短句来源
     The reaction yield can get 97.5%. The CMC of the emulsifier is 2.616×10~(-2) g·L~(-1) by the determination of surface tension. The surface tension of γ_c is 32.2×10~(-3)N·m~(-1) at CMC.
     利用表面张力仪,测定了该乳化剂的临界胶束浓度(CMC)为2.616×10~(-2) g·L~(-1),溶液在临界胶束浓度下的表面张力γ_c为32.2×10~(-3)N·m~(-1)。
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  相似匹配句对
     Determination
     决心
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     DETERMINATION
     决心(英文)
短句来源
     THE DETERMINATION OF THE EARTH'S SURFACE ALBEDO
     地球表面反射率的确定
短句来源
     Determination of DO
     水中溶解氧的测定
短句来源
     Determination of the Surface Tension of PEEK
     聚醚醚酮表面张力的测定
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  determination of surface
We address the determination of surface reaction kinetics and growth conditions from experiments and reactor-scale models, and the prediction of polycrystalline film texture and morphology from the molecular-scale results.
      
The measurement of the tunneling conductance and the ac conductance of a tunnelable MOS capacitor enables the determination of surface states distributions in semiconductors.
      
Determination of surface states distribution in a-Si:H using MOS tunnel Junctions
      
Studies on the determination of surface deuterium in AISI 1062, 4037, and 4140 steels by secondary ion mass spectrometry
      
A new technique for oxygen fugacity control was used in conjunction with the microcreep method for determination of surface energy.
      
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The nonaqueous solution back titration method is often used for the determination of surface acidity of solid catalysts, especially colored catalysts. The concentration of n-butylamine in solution, which is in adsorption equilibrium with the solid sample, is titrated by the solution of perchloric acid in glacial acetic acid. According to this method, it was supposed that the amount of physical adsorption of n-butylamine was in direct proportion to the amount of n-butylamine left in the solution and could...

The nonaqueous solution back titration method is often used for the determination of surface acidity of solid catalysts, especially colored catalysts. The concentration of n-butylamine in solution, which is in adsorption equilibrium with the solid sample, is titrated by the solution of perchloric acid in glacial acetic acid. According to this method, it was supposed that the amount of physical adsorption of n-butylamine was in direct proportion to the amount of n-butylamine left in the solution and could be deducted by linear extrapolation.The above assumption has been tested and found to be invalid. The measurements of the adsorption isotherms of tens of samples indicate that they are similar in shape to Langmuir isotherms, and the only difference lies in the fact that they do not intersect the ordinate at the original point. Obviously, the acidity obtained by linear extrapolation tends to be on the high side. Thus, it is concluded that the amount of adsorbed n-butylamine on many samples consists of two parts: one is the adsorbed amount of acid sites, which has no relation to the equilibrium concentration of n-butylamine, and the other is the adsorbed amount of non-acid sites, which is very often related to the equilibrium concentration of n-butylamine in accordance with the Langmuir relation. In this paper, a new data processing method is presented. The acidity obtained by this new method corresponds to the results gained by Hammett indicator method very well and is equivalent to the total acidity which is stronger than a certain acid strength between H0≤+ 4.8 and H0≤+3.3.

测定催化剂,特别是有色催化剂的表面酸度时,常常使用非水溶液回滴法。但这种方法所得的酸度值常常偏高,我们以大量实验证明,许多催化剂对正丁胺的吸附由两部份构成:一是酸中心吸附量,与正丁胺的平衡浓度无关;二是非酸中心吸附量,与正丁胺平衡浓度的关系常常符合Langmuir等温式。本文讨论了测定原理,提出了新的数据处理方法,所得结果物理意义明确,并与吸附指示剂法所得结果有良好的对应关系。

The disadvantages of the maximum bubble pressure method,the conventional method for the determination of the surface tension of a melt is described in this article.The author makes use of a water model in his experimentation and introduces a few laboratory conditions which serve to improve the determination procedure.It is claimed that the improvement effects on the observed data from the determination of surface tension and densities for water,molten salt,slag surfaces are very satisfactory.

本文论述了传统的测定熔体表面张力的方法——气泡最大压力法存在的问题,并通过水模型实验提出了改进的实验条件。用改进后的气泡最大压力法测定了水、熔盐、熔渣的表面张力及密度,得到十分满意的结果。

Laser Raman technique is highly sensitive to the analysis and determination of surface composition and structure of tungsten catalyst. In this paper, the conversion of oxidized state to sulfidized state of Ni-W/r-Al2O3 catalyst was studied by in-situ Raman spectroscopy combined with Auger spectroscopy and ESCA. The chemical states of the same tungsten compounds under different sulfuration conditions were studied. Ammonium metatungstate is easier to be sulfidized to WS2;H2WO4 is first dehydrated to WO3...

Laser Raman technique is highly sensitive to the analysis and determination of surface composition and structure of tungsten catalyst. In this paper, the conversion of oxidized state to sulfidized state of Ni-W/r-Al2O3 catalyst was studied by in-situ Raman spectroscopy combined with Auger spectroscopy and ESCA. The chemical states of the same tungsten compounds under different sulfuration conditions were studied. Ammonium metatungstate is easier to be sulfidized to WS2;H2WO4 is first dehydrated to WO3 and then converted to oxysulfurtungstate, but no pure WS2 is observed; WO3- is very hard to be sulfidized. The activity for hydrodenitrogenation of Ni-W/r-Al2O3 catalyst with different tungsten loadings and commercial Ni-W/r-Al2O3 catalyst under various sulfuration conditions was determined in a bench-scale unit. Both oxysulfurtungstate and WS2 are tentatively suggested as the active components in the catalytic hydrodenitrogenation process.

以激光喇曼光谱控制气氛高温原位法,结合Auger和ESCA及小型工业实验装置,研究硫化态Ni-W/γ-Al_2O_3催化剂活性相的化学形态及其表面光谱特性。也考察了氧化态,硫化态以及由氧化态转变为硫化态时的条件和化学形态上间的转变关系。结果表明,目前有些催化剂采用的硫化条件是不理想的,表现为在硫化后催化剂的表面上主要组分是硫氧化物,尚有改进余地。并对硫化态催化剂的稳定性进行了研究。实验表明,在某种条件下硫化态催化剂也可以较长时间在空气中保留。小型工业实验装置对催化剂的评定结果和催化剂的表面光谱特性十分吻合。从而为Ni-W/γ-Al_2O_3催化剂硫化条件的选择提供了重要的依据。

 
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