电学

EDS and Surface-profile results indicate that the stoichiometries of all the samples approach 2:3 and the thicknesses are over 500nm. XRD results indicate that the major diffraction peaks of the film match those of Bi2Te3.The film growth exhibits preferred orientation at (015) phase and many Bi, impurity peaks are observed. Hall and Seebeck coefficient measurement reveals that all the samples are n-type with the carrier density of 10^23cm^-3 and conductivity of 10^-5Sm^-1 which confirm the samples have nice thermoelectrically properties.

能谱分析和台阶仪测量结果显示本文所制备的薄膜Bi：Te原子比接近2：3，厚度都大于500nm；XRD测量结果显示薄膜的主要衍射峰与Bi2Te3标准衍射峰相同，在（015）晶面上择优选向明显，有少量的Bi、杂质峰存在；霍尔系数测试及Seebeck系数测量结果显示，薄膜都为n型半导体薄膜，载流子浓度量级为10^23cm^-3，电导率量级10^-5Sm^-1，具有良好的电学性能。

A multi-level model is introduced to investigate the influence of carbon concentration on compensation mechanism in undoped GaAs crystals.

引入多能级模型研究了非掺GaAs晶体中碳浓度对电学补偿机制的影响。

The results showed that the electrical, electrochemical and optical properties of the xerogel films changed a lot after the modification of PEO.

结果表明，PEO的修饰使V2O5干凝胶薄膜的电学、电化学、光学性能都发生了较大的变化。

The results also show that the absorption of the film, in the range of 200～800nm, decreases as the wavelength increases. Surface plasmon resonance absorption peak at 560nm and interband transition absorption of Cu in shorter wavelength range were observed.

Au ，Ag ，Cu ，Al和MgF2 分别为重要的电学材料和光学材料，均具有简单的结构且不互溶，由它们复合而成的纳米颗粒金属陶瓷薄膜具有由于量子尺寸效应引起的团簇能带结构改变所导致的独特光电特性，可望用于新型光电子器件。

The components and surface microstructure of the oxide film is analyzed by X-ray and SEM. Its power insulated is measured. The results show that oxidation film is composed of noncrystal Al_2O_3 and a little of crystal γ-Al_2O_3, it shows i...

结果表明，所获得的氧化膜是由非晶态的Al2O3以及少量晶态-γAl2O3组成，呈致密的网状结构，其电学性能满足基板的要求。

Steinmetz, a genius of the first magnitude when it came to electricity, was a failure as the head of the calculating department.

对于电学方面的学识，斯坦米滋可以算得上是位一等的人才。可是，他担任了会计部的部长，却等于废物。

Alloying is one of effective measures to improve the electrical properties of Fe〓Al alloys.

合金化是改善Fe〓Al电学性能的有效方法。

The structure, components and electrical characteristics of Y2O3 films annealed at different temperatures are studied.

对薄膜在不同温度退火后的结构、成分和电学性能进行了分析研究。

Here there have been many culs-de-sac: searches for foreshocks, tilts, radon, electrical precursors and variations in velocity ratios of P-waves to S-waves have either failed or are at best unproven.

在这方面曾走进许多死胡同∶寻找前震、地倾斜、氡、电学的前兆，以及P-波或S-波速率的变化。但是，这些努力或者失败，或者在最好的情况下未能获得验证。

As a try of this mode, this paper dilates the evolutive process of a simulantelectrical laboratory. The necessary subjective and objective conditions for the developing of this software, the softwares present developing situation and feasibilityof researching in the future are put forward.

作为对这种新型实验教学模式的一种探索，本文详细介绍了仿真物理实验室电学部分的开发过程，分析了开发这种新型软件所必需的各种主客观条件，软件开发目前已达到的实际水平、将来的发展方向、大规模开发的可行性及其应用前景。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。