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The design for impedance converting circuit of input current,transistor amplifying circuit and converting circuit of output current is presented.The telegrapher equations are adopted to determine the impedance of transmission-line transformer,which is used to convert circuit impedance between signal source and transistor.

讨论了放大器输入回路阻抗变换电路、晶体管放大电路以及输出回路阻抗变换电路的设计思想，运用电报方程从理论上推导出用于信号源和晶体管之间阻抗变换的传输线变压器输入输出阻抗计算公式，由此设计出模拟信号处理电路中非常重要的AB类高功率放大器。

The theoretical foundation of electrical prospecting is that the resistivity of different rocks and minerals are different, and different fields have different responses to telluric current structure. So we can inverse telluric current structure of medium according to the response, that is, the resistivity and distribution of underground rock and mineral.

电法勘探的理论基础是不同岩石矿物的电阻率不同，不同地电结构的场响应不同，因此我们可以由观测的场响应反演出介质的地电结构，即地下岩石矿物的电阻率及分布。

In Group A,one sample was found blood current tenuity at 14 days,one was occlusive in the femoral vein at 28 days ,the blood current ran into the vena cava posterior through the branch stem.The others were normal .And in Group B,there were one sample in each phase obliterative in the femoral vein because of relapse . For scanning electron microscopy result,Group A had a process which the injury of endothelial cells were from lower-grade to repair.

结果：1。影像学检查DSA下行血管造影见C、D两组术后第7天、14天和28天股静脉血流通畅，无明显充盈缺损或闭塞，A组第14天造影1只家兔股静脉血管纤细，血流尚通畅，第28天造影见1只家兔股静脉闭塞，血流从侧枝进入后腔静脉，其余时相股静脉血流通畅无明显异常；B组第7、14、28天造影各见1只家兔股静脉闭塞，其余未见明显异常。

The current of events of education before college level is both western and eastern countries are preparing for a reform. In this reform tidal current, there are many developed countries and also many developing countries.

分析当前国际基础教育的形势，不论是东方还是西方，不论是发达国家还是发展中国家，准备或正在进行基础教育改革的比比皆是。

The difference of the structure, which influenced the light emission of porous, was the result of the competition between diffusion current and thermion current.

这主要是由于扩散电流和热电离电流的竞争，造成多孔硅形貌的多样性和孔隙度的变化。

Measurements of the forward I-V characteristics of these diodes have shown that thermionic emission current is the dominant current conduction mechanism for these Schottky contacts.

对研制的器件特性进行了比较分析，I-V特性测量说明Pt／6H-SiC肖特基二极管有较好的整流特性，热电子发射是其主要的输运机理，理想因子为1.23，肖特基势垒高度为1.03eV，开启电压约为0.5V。

The thermionic emission and tunneling current dominate the conduction process at higher Xc. However, if the film has low Xc, which means lager barrier width, the tunneling current can be neglected.

首次运用二维结构渗流模型计算了微晶硅薄膜结构对电导率的影响，从理论上解释了造成微晶硅薄膜输运各向异性的主要因素是薄膜中晶粒的柱状生长。

The simultaneously measurements of surface electric field and Maxwell current density show that, underneath active thundercloud, surface Maxwell current density reflects the change of cloud charge sources, and is quasi-steady between lightning discharges.

利用实验观测和模式计算相结合的方法，对传导电流、位移电流和电晕电流的相对重要性作了估计。

For example, periodical changes with tidal current, mean voltage is set up by mean current.

在有边界的情况，正负离子累积在相反的边界上，而造成电位差。

The tidal current is the unceasing change, so long as actually has own characteristic is the tidal current!

潮流是不断的变化的，其实只要有自己的特色就是潮流！

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。