电子束

The numerical results show that lossy dielectric-load can heighten the start oscillation current of absolute instability, and increase depends on the magnetic field strength and the perpendicular-to-parallel velocity ratio of the electrons; The thickness of the lossy waveguide increases the start oscillation length of backward wave oscillation.

结果表明：损耗介质的加载，可以提高绝对不稳定性起振电流，提高的幅度依赖于工作磁场偏离饱和磁场的程度、电子束横纵速度比等；增加波导损耗介质加载的厚度，可以提高竞争模式的回旋返波起振长度。

The function of pulse power system of LIA is generating accelerative pulse and providing it toaccelerate electronic beam synchronously.

在直线感应加速器中，脉冲功率系统的作用是向加速器提供与被加速电子束同步的加速脉冲。

High power electron accelerator is the key installation which supplies electron beam to desulfurize from factory smoke, it is required to give stable DC of 500 mA and can operate for long time continuously.

大功率电子加速器是用电子束进行电厂烟气净化的源装置，要求稳定发射直流500mA，且适用于连续长时间运行。

Having developed an understanding of basics, intellisuite is introduced in the context of mems cad with the aim of using it in the design and simulation of a simple mems device which will be subsequently fabricated using the clean room facility ie mask aligner, electron beam lithography, wet bench for chemical etching, sputtering etc.

制订了一项谅解的基础， intellisuite介绍了在微机电系统计算机辅助设计的目的是利用它在设计和模拟一个简单的mems器件将在随后采用清洁房间设施即遮罩同步，电子束光刻，湿法化学腐蚀板凳，溅射等先决条件：英国104 ， 103太太，太太， 221 ， 231太太，太太312 。

The angular correlation between the emitted electrons, which equally shared the excess energy, was analyzed in the plane defined by the projectile and the first detected electron.

着重分析了在入射电子束与出射电子构成的平面内，3个均分系统剩余能量的电子出射角关联关系，并与理论计算进行了比较。

It seems that the electron outside the atomic nucleus moves in an orbital around atomic nucleus.

将一束很弱的电子束投射到极薄的金属箔上，但电子穿透金属箔，在箔后的照相底片上记录下分散的感光斑点，这表明电子显示出微粒的性质。

In atomic vapor laser isotope separation, the metal is heated and melted by electron beam, and some atoms are on the metastable states. In order to analyse the influence of metastable states' deexcitation on vapor physical parameters, such as velocity, temperature, direct simulation Monte Carlo method is used to simulate the 2 D gadolinium evaporation from long and narrow crucible.

在原子法激光同位素分离工程中，金属受电子束的加热而熔化，有一部分原子处于亚稳态能级，为了分析在蒸发过程中亚稳态原子退激对原子蒸气的速度、温度等物理特性的影响，采用直接模拟蒙特卡罗法模拟钆原子蒸发过程，分析亚稳态原子退激过程对蒸气特性的影响。

For use with all Bb, Eb, C and bass clef instruments, the Jazz Play-Along Series is the ultiimate learning tool for all jazz musicians.

与所有降B调，电子束，C和低音谱号文书，爵士队用播放沿系列是ultiimate学习所有爵士乐手工具。

So, our main work is to obtain a satisfactory electron beam with diameter about micrometers by means of choosing a suitable LaBe cathode electron-gun system and a suitable focusing system.

电子束打靶产生X射线已经是很成熟的理论，因此，本论文的理论研究重点是选择合适结构的电子源系统与合适结构的聚焦系统并将电子束会聚为微米级的细小束斑。

In the subsequent experiments, when the LaBe cathode emitted continuously and the current is 40uA, the minimum diameter of electron-beam spot recorded was 22 um. While the LaB6 emitted pulse, the minimum diameter of the focus decreased and wasnt more than 15um. The reason is that the heat accumulated on the foil-film, which enlarged the focus dimension, reduced remarkably.

当阴极采取连续发射电子的工作模式(发射电流40μA)时，记录测量到的最小电子束焦斑直径不大于22μm；而在相同条件下，以脉冲方式发射电子束时，其焦斑直径不大于15μm，原因是短时间的电子轰击减小了靶面的热堆积效应等。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。