查询词典 electron gun

One type is the iconoscope. It contains three essential parts--a mosaic, a collector ring and an electron gun.

一种是光电摄象管，它有三个基本部件--嵌镶光电阳极、集电环和电子枪。

Some high-end CRT is used in the SAF called dynamic electron gun, with the compression mask images showed a decrease of jitter, a super-fine 0.20mm dot pitch level.

部分高端显像管中更是采用了名为SAF的动态电子枪，配合压缩荫罩减少了显示影像的抖动，实现了0.20mm的超细腻的水平点距。

However, the structure of electron gun.

不过，在电子枪的结构上。

Compared with the Pierce's theory, the method could be used in electron gun design and optimization.

通过和Pierce枪设计理论比较，本文的计算方法可以用于电子枪的设计和结构优化。

The design of electron gun, which is one part of a linac for food irradicidation, is described.

本文介绍了中国科技大学国家同步辐射实验室研发的一台食品辐照保鲜用直线加速器中电子枪的设计。

The electron gun is in a vacuum system of 10－4 Pa.

系统的总时间脉宽设计为358 fs。

In theory, firstly, the numerical simulation methods, such as the boundary element method, the finite difference method and the finite element method, were utilized to calculate the distribution of electric field intensity and potential of the electron-gun system, the focusing system and the whole equipment, respectively. Then, the trajectories of the electron-beam were traced by using of the Runge-Kutta method and the Monte-Carlo method associatively. The point spread function was also calculated.

在理论分析中，先后采用边界元方法、差分方法、有限元方法等科学数值计算方法，编制程序，对X射线源的电子枪发射系统、聚焦系统以及发射系统与聚焦系统的组合系统等的电场分布进行了严格的计算，在准确求得各系统电场内各个剖分点的电场场强、偏导数等参量的基础上，采用蒙特-卡罗模拟方法和不等距龙格-库塔方法相结合，追踪由LaB_6单晶阴极表面发射出的大量电子束在电场内的运动轨迹，求出点扩展函数，并根据点扩展函数的优劣，反复调节、大量计算对比，挑选出X射线源最佳的电极结构及其组合。

A DC high brigytness laser driven by photoemissive electron gun is being developed at Peking University,in order to produce 50～100ps electron bunches of high quality.

采用激光驱动光阴级和100kV直流加速间隙可产生宽度为50～100ps的高亮度脉冲电子束。

The theory is that electron launched by electron gun is inducted into discharge chamber with screen voltage attracting, gas will be charged by inputting RF power. Ion can be attracted by screen and accerlate voltage.

射频宽束离子源工作原理是利用电子发生器产生电子，在屏极电压作用下把电子引入离化室，利用射频感应原理将能量耦合到离化室，再利用气体放电原理产生等离子体，在屏极和加速极的作用下引出离子束。

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。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。