极化

In organic light-emitting devices, the electrons and holes are injected into the polymer from the electric diodes and then they form negative and positive polarons.

在有机发光器件中，从电极注入的电荷在聚合物链中形成极化子，在电场作用下正负极化子将碰撞、复合形成激子。

Based on these results, we suggest that the new peak results from the electron transfer from small polarons （Nb4+Li） to free polarons （Nb5+Nb）.

基于上述实验结果，认为该峰应该起源于电子在相邻的小极化子（Nb4+Li）和自由极化子（Nb4+Nb）之间的跃迁。

For the DE theory, the itinerant electron is mobile in the metallic FM domains and polarons can only transport in the PM domains. In the IM transition region, the conductivity is the sum of the polaronic and itinerant electronic conductivity. Under this model, the DE theory yields agreement with the experimental resistivity excellently.

在DE理论中，金属性铁磁畴中的巡游电子是可传导的，而极化子只能在绝缘性顺磁畴输运，在IM相变温区，体系的电导率是极化子和巡游电子的电导率之和，通过应用我们的模型，发现DE理论可以得到与电阻率的实验数据非常一致的拟合结果。

We find that the scattering process of the charge and lattice defect is different under different strengths of electric field and the interchain coupling interactions.(1) The results of the dynamics of oppositely charged polarons in polymer chains show that:①At a weak field (.1 mV/A), they finally scatter into an entity, which will be dissociated as a pair of neutral solitons after their first collision and separation.

1聚合物中极化子对的非弹性散射对电场强度的依赖关系表明：在弱场(小于0.1mV/A)时，电荷由于量子隧穿相互抵消，但不改变符号，极化子晶格碰撞后带着剩余的电荷返回，但是它们不能分得很远，在电场作用下，可进行第二次碰撞，结合成一个整体，然后又分成一对中性的孤子对。

In chapter one,we introduce the background of our work and give abrief review of polaron theory.

在第一章中，我们首先对极化子理论和格林函数理论作一个简单的综述，并综述了低维系统中的极化子理论的研究现状，进而引出本论文所要研究的主要问题。

The results reveal that the polaron effects are quite important especially around the peak value of the third-order susceptibility.

结果表明：极化子效应对光学克尔效应的三阶极化率有很大影响，并且影响的大小与量子点的尺寸大小有关。

It is also found that the collision proccess can influence the stability of the polaron and there are new energy levels appearing in the gap after the collision.

极化子和激子的碰撞对极化子的稳定性有影响，还会使能隙中出现新的能级。

It is also found that the collision proccess have influence on the stability of the polaron and there are new energy levels appearing in the gap after the collision.

极化子和激子的碰撞对极化子的稳定性有影响，还会使能隙中出现新的能级。

Geophysical method displays two information models:① high resistivity, high polarization, low K, relative low magnetism and low total counts, which correspond to silicic alterative zones;② low resistivity, low polarization, high K, relative high magnetism and high total counts, which correspond to quartz porphyry intrusive body.

地球物理测量结果显示两种信息模式：①高阻、高极化、相对低磁、低K和低总计数率在空间上对应硅化蚀变带地段；②低阻、低极化、相对高磁、高K和高总计数率对应于石英斑岩侵入体地段。

The chemistry compatibility of the electrode and electrolyte at high temperature and effects of the sintering temperature on the microstructure and electrochemical properties were investigated, respectively. The results showed the sintering temperature has effect on the polarization resistance of the electrode. At moderate temperature, a fine microstructure with moderate porosity and well-necked particles has been formed, and the electrode gave the lowest polarization resistance.

考察了电极材料与电解质材料在高温时的化学相容性；研究了烧结温度对电极的微观形貌及电化学性能的影响，结果表明，烧结温度过高或过低都会导致电极极化面电阻的增加，当电极的烧结温度适中时，电极表面粒子有一定的烧结连接，并且有一定的多孔结构，电极的极化面电阻达到最小值。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。