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  growth mode
The growth mode developed provides growth rates that are five times higher of large high-quality optical KDP crystals.
      
Control over the parameters of InAs-GaAs quantum dot arrays in the Stranski-Krastanow growth mode
      
At high indium concentrations, a transition from the two dimensional to island growth mode was observed, which was caused by an increase in the mismatch strain.
      
With decreasing droplet diameter, the growth mode of the primary phase α changes from faceted to nonfaceted growth and the eutectic changes from needle-like to anomalous eutectic.
      
The growth mode of (ε + θ + Sb) ternary eutectic exhibits a transition of "divorced eutectic-mixture of anomalous and regular structures-regular eutectic" along the sample axis due to the inhomogeneity of sound field distribution.
      
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The effects of the additives (saccharin,1.4-butynediol and coumarineiectrocrystallization of nickel from Watts electrolyte have been studied using cyclic voltam'metry. The suits show that the electrocrystallization belongs to "irreversible and complex" process, no matter whet the electrolytes contain additives mentioned above. However the process is discriminative in the kinet three-dimensional nucleation and crystal growth. According to the nucleation-growth modci oroposed by Bosco and Rangarajan,it has been...

The effects of the additives (saccharin,1.4-butynediol and coumarineiectrocrystallization of nickel from Watts electrolyte have been studied using cyclic voltam'metry. The suits show that the electrocrystallization belongs to "irreversible and complex" process, no matter whet the electrolytes contain additives mentioned above. However the process is discriminative in the kinet three-dimensional nucleation and crystal growth. According to the nucleation-growth modci oroposed by Bosco and Rangarajan,it has been found that, in the electrolytes without additives, or in those containing coumarin only or ail the three additives, the electrocrystallization of nickel follows the progressive 3-D nucleation and growth mechanism, whereas the instantaneous 3-D nucleation and growth mechanism in the electrolytes with saccharin and/or butynediol. The effects of the three additives on the nucleation and growth are discussed in terms of their molecular structures and adsorbabihtes

采用循环伏安法研究了糖精、丁炔二醇和香豆素对镍电结晶过程的影响。无论Wstts 液中含不含上述添加剂,镍的电结晶均同于“不可逆和复杂的”过程,分别由不同的三维成核和晶核生长的动力学所引起。根据 Bosco 和Rangarajan 提出的成核/生长模式进行拟合,发现在不含、只含香豆素和同时含上述三种添加剂的 Watts 液中,电结晶遵循连续成核和生长的机理,而在含糖精,丁炔二醇或两者兼有的镀液中,则按瞬时成核/生长方式进行。还就三种添加剂的结构特征和吸附能力讨论了它们对成核和生长规律的影响。

Molecular mechanical method including up to rhree—body interaction potential combined with ab initio parameterization, was empiolyed to investigate the structures of lithium clusters. The results are in good agree—ment with those obtained by ab initio. In addition aggregation modes of lithium in the gas phase and the tendency of their average combination energies with the increasing cluster cluster size were also discussed based on the M. M. calculation.

本文采用包含Axilord—Teller三体势的分子力学方法,计算了锂原子簇的平衡几何构型,结果表明,锂原子簇的势能面上存在一些近简并的结构。但最稳定结构与从头算的结果基本一致,同时对气相原子簇的生长模式、簇尺寸增大原子簇平均结合能的变化进行了讨论。

Interfaces prepared by vapor deposition of Mn onto Rh(100) surfaces have been examined using AES,UPS and LEED.Manganese deposition was conducted respectively at 300K and 600K,and the surface composition and order were examined as a function of temperature by further annealing up to 1200K.Plots of AES uptakes(signal versus deposition time)indicated that the Mn film growth mode can be described by a layer-by-layer process only up to the first three to four adlayers at 300K,and evidence of disordered growth is...

Interfaces prepared by vapor deposition of Mn onto Rh(100) surfaces have been examined using AES,UPS and LEED.Manganese deposition was conducted respectively at 300K and 600K,and the surface composition and order were examined as a function of temperature by further annealing up to 1200K.Plots of AES uptakes(signal versus deposition time)indicated that the Mn film growth mode can be described by a layer-by-layer process only up to the first three to four adlayers at 300K,and evidence of disordered growth is inferred for higher Mn coverages.For deposition at 600K,AES data indicated significant interdiffusion and surface alloy formation.LEED observations(recorded at a substrate temperature of 300K)showed that a c(2×2)pattern appeared when Mn diffused into the Rh(100)to a certain depth.The work function of the Rh(100)c(2×2)-Mn surface alloy is smaller than that of the pure Rh (100).Annealing experiments with various atates of Mn on Rh(100)were also measured by AES and LEED.The Mn films on Rh(100),deopsited at 300K,were stable up to 600K,For annealing temperatures above 300K,a c(2×2)pattern was observed.Mn diffused into Rh(100),and the ordered c(2×2)LEED pattern was again suggested to arise from the Rh-Mn surface alloy.The Mn signal decreased substantially by annealing up to 900K,and at this temperature surface alloy decomposition and Mn desorption started.For an annealing temperature up to 1200K,the Mn AES signals disappeared.

在超高真空(UHV)条件下,向Rh(100)表面蒸积Mn,利用AES、UPS和LEED等表面分析技术,研究了该Rh-Mn体系,发现了Mn在Rh(100)表面的两种生长模式,制备了一种未见报道的表面合金Rh(100)c(2×2)-Mn。

 
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