查询词典 beam-focusing

The effed Of three-dimensional perturbed velocities and three-dimensional perturbed current densities on the beam-wave interaction of plasma-filled dielectric Cherenkov maser is analysed by use of the self-consistent linear field theory without considering the effect Of the longitudinal guided magnetic field.The dispersion relation and the Simultaneous condition of the beam-wave interaction are derived. It is clearly shown that the instability of the interaction results from the coupling of the TM mode in t...

在无引导磁场的作用下，利用自洽线性场理论，分析了电子的三维扰动速度和三维扰动电流密度对填充等离子体的介质切伦可夫脉塞注波互作用的影响，导出了注波互作用的色散关系和同步条件，所得关系清楚地表明，其工作用不稳定性是由填充等离子体的介质筒慢波波导中的TM模与电子注模通过电子注耦合所致，并求得了电子注引起的频偏和波的增长率。

High-quality epithermal neutron beam is one of the key conditions for making Boron Neutron Capture Therapy of malignancy successful. The objective of this study is to design the epithermal neutron beam which meets the clinical requirements for BNCT.

高品质的超热中子束是硼中子俘获治疗恶性肿瘤取得成功的一个关键条件。

In this paper, normal section bearing capcity of SRC beam is analyzed from three aspects on the basis of force character of upper flange of shaped steel in SRC beam.

文中根据型钢混凝土梁中型钢上翼缘的受力特点分三种情况对型钢混凝土梁的正截面承载力进行了分析。

Further more, the intensity distribution of output beam of single fiber and multi-fiber coupled laser diode is discussed. The pumping effect is studied by using the model of flat-topped beam.

在此基础上结合实际，讨论了单根光纤和多根光纤耦合LD的输出光束的光场分布，并利用已建立的平顶光束模型分析了它们的泵浦特性。

In this design, we have the total construction layout, such as from basic to the main, from the column and beam to the floor, masonry; another breakdown of the process, such as the support beam template, the Bangzha steel, concrete pouring, Also joined the safety management, construction and other projects of civilization, so that our construction design more comprehensive, concrete, to facilitate construction.

在本设计中，我们有总的施工布置，如从基础到主体，从柱、梁到楼板、砌体；又有分项的工艺流程，如梁模板的支撑、钢筋的绑扎，混凝土的浇筑，还加入了安全管理、文明施工等项目，使我们的施工组织设计更加全面、具体、便于施工。

Calculate by hand at first, finish loading and calculating; Electricity regard as begin, finish floor, times of calculation of roof beam, The floor matches the muscle, the form construction drawing of roof beam.

首先进行手工计算，完成荷载计算；电算开始，完成楼板，次梁的计算，楼板配筋，梁表施工图。

Based on the compressibility, viscosity resistance and the working house system's deformation etc, flow equations of distribution spool, hydraulic tube and fluid cylinder for 300 MN die forging hydraulic press were established, and dynamics equations of moving beam and upper beam were established based on analysis. The dynamics mechanical-hydraulic coupling model of driving system was established.

考虑流体的可压缩性、粘性阻力及工作框架系统变形等因素，采用解析法建立300 MN模锻水压机动梁驱动系统分配阀口、液压管道、液压缸的流量方程以及动梁和上横梁的动力学方程，得到驱动系统的动态机液耦合模型。

Based on the compressibility, viscosity resistance and the working house system's deformation etc, flow equations of distribution spool, hydraulic tube and fluid cylinder for 300 MN die forging hydraulic press were established, and dynamics equations of moving beam and upper beam were established based on analysis. The dynamics mechanical-hydraulic coupling model of driving system was established.

摘 要：考虑流体的可压缩性、粘性阻力及工作框架系统变形等因素，采用解析法建立300 MN模锻水压机动梁驱动系统分配阀口、液压管道、液压缸的流量方程以及动梁和上横梁的动力学方程，得到驱动系统的动态机液耦合模型。

Solid laser power supply acts as the electrical pump source that produces energy to inert gas discharge lamp to obtain the output of laser beam, so, it is one of the most important parts of the laser machining equipments and decides the overall performance of laser beam.

固体激光器电源作为提供能量给惰性气体放电灯以便获得大功率激光输出的电泵浦源，是激光加工设备中最重要的部件之一，是决定激光器整体性能的重要因素。

While the construction of the high precision measuring device cannot be rigid enough to keep within the demanded limits in the orthogonal direc- tions to the line gauge beam under various loading condi- tions of the device to be measured, length indicators mounted on separate supports to control lateral displace- ments contacting the horizontal and vertical beam faces are added.

而建设 高精度测量装置不能刚性不够为了保持内部要求限制在正交目录筹措到线衡量光束下不同加载条件-筹措的器件测量，长度指标安装于单独的支持，以控制侧向位移-自1912年接触横向和纵向束面补充。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。