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In chapter 6, within a two-band tight-binding model driven by a dc-ac electric field, we investigate the effect of external noise on the transport property of electrons by controlling the strength and the decay constant of the noise.

在第六章，利用直交流电场驱动下的双带紧束缚模型，我们研究了外部噪声对电子输运性质的影响。

Following the previouselectronic growth model, a new effect - degeneracy pressure of electrons is taken into account.

在继承以前电子生长理论的基础上，提出一种新的效应—自由电子简并压强效应。

The understanding of the delocalization of π electrons in the conjugated systems is the foundation of studying a...

共轭体系中π电子的离域性，提供了研究设计新型有机材料的结构基础，涉及导体，铁电体，磁性材料及非线性光学材料等有关领域。

The results showed that a red-shift of the maximum absorption took place when the delocalization of the π electrons in the organic molecules increases.

计算结果表明，随着有机分子的π电子离域结构的增大，最大吸收峰红移。

Substances whose electrons are all spinpaired,by contrast,are weakly repelled by magnetic fields and are said to be diamagnetic.

物质的电子都是两两自我成对的，与此相反，是弱击退了由磁场，并说是抗磁性。

At the normal state, porphyrin molecules do not have EPR signal. However, light excitation may cause a transition of porphyrin molecules from singlet to triplet. At the same time, the change from diamagnetism to paramagnetism occurred to porphyrin molecules. In this case, the two un-paired electrons are nearby each other and cause a strong interaction, giving EPH signal with sharp peak at g = 2.000. The g value increased with an increase in electron cloud density.

常态下卟啉分子没有EPR信号，在光的激发下，卟啉分子由原来的逆磁性分子变成顺磁性的激发三重态分子，这种激发三重态分子在分子轨道上具有两个未成对电子，这两个电子相距很近，彼此之间发生很强的相互作用而产生电子，它的g值随卟啉共轭体系平均电子云密度增大而变大。

At the normal state, porphyrin molecules do not have EPR signal. However, light excitation may cause a transition of porphyrin molecules from singlet to triplet. At the same time, the change from diamagnetism to paramagnetism occurred to porphyrin molecules. In this case, the two un-paired electrons are nearby each other and cause a strong interaction, giving EPR signal with sharp peak at g =2.000. The g value increased with an increase in electron cloud density.

常态下卟啉分子没有EPR信号，在光的激发下，卟啉分子由原来的逆磁性分子变成顺磁性的激发三重态分子，这种激发三重态分子在分子轨道上具有两个未成对电子，这两个电子相距很近，彼此之间发生很强的相互作用而产生电子，它的 g 值随卟啉共轭体系平均电子云密度增大而变大。

The field emission of diamond film involves the electrons travel from the negative end of the power supply, through the various interfacial contacts, through the bulk of the film itself, to the film surface,then tunnel through the potential barrier ,propagate through the vacuum gap, before finally reaching the anode.

金刚石膜场致发射过程是电子从导电基底开始，经基底/金刚石界面、金刚石薄膜体内传输到表面，然后穿过表面势垒进入真空、经真空电场加速到达阳极的一个复杂过程。

An experiment on near threshold double ionization of helium impacted with 106 eV electron has been performed by using the newest developed reaction microscope. In this experiment the momenta of all products after double ionization of helium were measured and the five fold differential cross section was obtained for emitted electrons.

利用最新发展起来的适用于低能电子入射的反应显微成像谱仪，对电子轰击He原子近阈值的双电离过程进行了研究，实验测量了反应后4个粒子的全部动量，获得了五重微分截面及出射粒子间的关联信息。

In the first part work,we developed a new method for measuring the effective diffusion constant oftwo-dimensional electrons in the presence of magnetic field.

在第一部分中，我们提出一种测量强磁场下二维电子气有效扩散系数的新方法。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。