电学

Due to the symmetry of the plate, there are symmetric and antisymmetric mode vibrations with respect to the median plane of the plate.

首先建立了在偏压电场作用下压电介质的运动微分方程，进而根据对称模态和反对称模态的特点，分别在自由表面电学开路和电学短路情况下得到了Lamb波传播的相速度方程。

Structures and electrical properties of boron and aluminum; the structures and electrical

各项的相同点和不同点：硼和铝的结构和电学性质；碳和硅的结构和电学性

Mechanics and electrology both play dominant roles in the physics course in middle schools, but electrical concepts, more abstract than mechanical ones, are not only the difficulty of learning, but also the focus and difficulty of teaching.

物理概念是物理科学知识体系中最基本的部分，在中学物理课程中，力学和电学占据着主要地位，其中电学概念相对力学概念更抽象，是学生学习的难点，同时也是教师教学的重点和难点。

Hexagonal nano-silicon carbide thin films doped and undoped with phosphorus which possess a characteristic of the ultraviolet photoluminescence have been deposited by helicon wave plasma enhanced chemical vapour deposition technique under the high hydrogen condition in this work. The optical and electric properties of the doped nano-SiC films together with the electric and photovoltage properties of the n-p nc-SiC/Si heterojunction is studied and analyzed.

本工作利用螺旋波等离子体化学气相沉积技术在高氢气条件下制备了具有紫外发光的六角晶型纳米碳化硅，对这种材料进行了不同比例的磷掺杂，并对这种掺杂的纳米碳化硅的光学、电学特性以及nc-SiC/Si异质结的电学特性和光电压特性进行了研究。

Raman spectra of boron carbonitride nanotubes made by thermal decomposition under different temperatures and with different catalysts were analysized. The intensity ratio of D to G band, I D/I G, increases and then decreases with the increase of the temperature.

引 言 理论计算和实验研究都表明硼碳氮纳米管不但具有比碳纳米管更优异的机械、电学性能和更高的抗氧化能力[1，2 ] ，而且BCN纳米管的机械和电学性能不受其直径的影响，只与其组成有关[3 ] 。

Numbness symptoms were significantly related to electrodiagnosis findings of neurophysiological grading and sensory conduction velocity. The severity of numbness symptoms correlated with the abnormality of the electrodiagnosis results.

将此三大症状与电学诊断结果进行相关性分析后，我们发现麻木针刺感觉与电学检查指标的相关性较高，分别与神经综合分级呈正相关，与感觉神经传导速率呈负相关。

This article carried on the reading related activity and the physical question design and in the solution literature foundation to the related concept connotation and the related theory has combed with summarizes, proposed based on the active junior middle school physics question and the solution principle and the method, and has carried on nine grade electrophysics based on the active question design teaching practice, has formed four typical cases: Series circuit characteristic case, electric radiator electric current thermal reaction case, Electricity review class case and practice simple circuit design case, has obtained the positive result.

本文在阅读有关活动及物理问题设计与解决的文献基础上对相关概念内涵及有关理论进行了梳理与综述，提出了基于活动的初中物理问题与解决的原则与方法，并进行了九年级物理电学基于活动的问题设计教学实践，形成了四个典型的案例：串联电路特点案例、电热器电流的热效应案例、电学复习课案例和实践活动简单电路设计案例，取得了积极的结果。

The electrical property of the Fe-doped SI-InP is deteriorated due to the existence of a high concentration of deep level defects, which act as compensation and trapping centres.

在掺铁半绝缘InP材料中由于存在高浓度的深能级缺陷参与电学补偿，降低了材料的电学性能。

The study of electricity had hardly begun when Franklin, in 1752, conducted his dangerous kite experiment in a thunderstorm, founding the science of atmospheric electricity.

电学研究刚一开始，富兰克林就于 1752 年在雷暴云中进行了危险的风筝试验，从而奠定了大气电学的基础。

The study of electricity had hardly begun when Franklin, in 1752, conducted his dangerous kite experiment in a thunderstorm, founding the science of atmospheric electricity.

电学研究刚一开始，富兰克林就于1752年在雷暴云中进行了危险的风筝试验，从而奠定了大气电学的基础。转贴于：生活英语_好考试

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。