查询词典 valency electron

These materials have excellent chemical and thermal stability, high melting point, high thermal conductivity, high breakdown voltage and large carrier mobility rate especially the smaller electron affinity and potential or even a negative electron affinity, and the situation has greatly reduced the market launch of the threshold voltage, therefore, Field emission of such material will have a very vast potential for development and application prospects.

这些材料具有良好的化学与热稳定性、高熔点、高热导率、高击穿电压及大的载流子迁移率，特别是较小的电子亲和势甚至是负的电子亲和势，大大降低了场发射的阈值电压，因此，这类场发射材料将有着极为广阔的发展潜力及应用前景。

The usually used electron-transporting materials have disadvantages.They can be easily formed crystal,have lower electron affinity,a narrow gap and difficult to limit the complex exciton to the luminescence layer,all of these disadvantages limit,their application.

有机电致发光材料中常用的电子传输材料容易结晶和低的电子亲和性限制了它的应用；并且能隙较窄，难以将复合激子限制在发光层。

Cooling force in electron cooling system is closely related to the temperature of electron beam.

电子冷却系统中冷却力的大小与电子束的温度密切相关。

In case the electron transfer increases the outer electron cloud density of active metal, metal catalyst would be liable to be poisoned by sulfur.

如果这种电子转移的结果使活性金属的电子云密度增加，则金属型催化剂抗硫性就会下降。

Equivalently, the induced electromotive force is the result of the rotation of electric field of light in the electron cloud. Polarization of electron cloud by light and its influences on the induced electromotive force are discussed.

分析了光电场在电子云上引发的极化，以及电子云上的极化对感生电动势的影响，进一步明确了光对电子的三种作用——光的电场作用、磁场作用和电磁感应作用——之间的区别。

Crystal structures of several kinds of materials were studied in this thesis by electron diffraction and high-resolution electron ...

利用电子衍射和高分辨电子显微学方法分析了几种类型材料的晶体结构： 1。

Crystal structures of several kinds of materials were studied in this thesis by electron diffraction and high-resolution electron microseopy .

利用电子衍射和高分辨电子显微学方法分析了几种类型材料的晶体结构： 1。

The structures and morphologies of the powders were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy.

用X射线衍射分析产物的结构，用扫描电镜和透射电镜观察产物的形貌。

Since the first Landauer theory in 1957,theorists have attempted for 50 years to justify the drift force or electron momentum transfer assumed by Black as some electron-wind force to impart on the metal atoms and ions to move them.

自1957年第一个Landauer理论以来，理论工作者用50年试图论证飘移力，即Black假设的电子动量转移，又称电子风力，作用到金属原子和离子上，可使它们移动。

The transport and current-voltage properties of submicron GaAs MESFET device are calculated firstly based on the nonparabolic effective mass energy band model and Monte Carlo method which includes all major scattering mechanisms. The electron drift velocity, electric field and the non-homogeneity of mobility distribution in device are obtained. The influences of different gate lengths to electron drift velocity and drain current are analyzed.

根据对以GaAs、GaP和InP为主的Ⅲ-V族化合物半导体材料的能带结构和散射机制的分析，采用蒙特卡罗模拟方法，研究了亚微米尺寸的OaAs MESFET器件的电子密度分布、电场强度、漂移速度和迁移率分布等输运性质，以及栅长对器件性质的影响和电流电压特性。

Yet, Edith says, there was always money in the bank.

但是Edith说，她的银行户口里面总是有钱。

We have created a series of files that resolve this problem--one for each day of the 40 days of purpose.

我们制作一系列的档案去解决这问题---一个为标竿40天中的每一天。