查询词典 beam-focusing

In this paper,through the analysis of the engineering quality accident of the top circle beam in a certain big wineshop,a mechanical model of the reinforced concrete circle beam is proposed.

通过对某大酒店顶层环梁质量事故的分析，提出了钢筋混凝土环梁计算的力学模型，经过计算和分析，找出了环梁支座处出现裂缝的原因，并给出正确的计算结果，使事故得以及时处理。

Based on the structure of Wollaston prism, a new design of symmetric beam splitting prism is given. From reforming the end surface of o light, we can get symmetric beam splitting.

基于Wollaston棱镜的结构，给出了对称分束偏光棱镜的一种新的设计，即通过修正 o 光束的出射端面来实现对称分束。

Based on the structure of Wollaston prism, a new design of symmetric beam splitting prism is given. From reforming the emergent end surface, we can get symmetric beam splitting.

基于Wollaston棱镜的结构，给出了对称分束偏光棱镜的一种新的设计，即通过修正光束的出射端面来实现对称分束。

All optical switches use the third-order optical nonlinearity of materials, whose work principle can be described as follows. One laser beam inducing the change of refractive index of materials, signal beam transmitted in mate rials will produce accessional phase change to realizing the "On" or "Off" ofoptical switches.

全光开关的工作原理利用了材料的三阶非线性光学特性，用一束光引起材料的折射率发生变化，信号光在其中通过时就会带来相位的变化，从而实现光开关的开关动作。

The good characteristics of the deflection system of electron gun can be obtained by optimizing the velocity and the location of emitting electron beam and by the aclinic emission of the electron beam, that can be achieved by making the end of the anode and the middle part of the cathode level.

研究结果表明：电子枪阳极板端点与阴极灯丝中心点保持水平可满足电子水平出射；非均匀分布的磁场对e型电子枪中电子束具有良好的聚焦作用；所设计的偏转聚焦系统在电子束流为50~100 mA时，束斑小于3 mm。

The paper describes theory of beam noise reduction in adiabatically varying magnetic field, deduces the relation between magnetic field and noise , gives out fourth order Runge-Kutta formula of 2-order differential equation, simulates the effects of different magnetic field on electron motion, the results show good agreement with theory analysis,it confirms that adiabatically varying magnetic field near the cathode can reduce the beam noise.

文章描述了回旋波保护放大器电子束绝热降噪的机理，推导了噪声与磁场的关系和二阶微分方程的四阶精度龙格－库塔法求解电子运动方程的公式，编程计算了电子在不同磁场中的运动轨迹，模拟了不同磁场对电子运动的影响，模拟结果与理论分析相符合，证实了阴极表面附近的缓降磁场可以降低电子束的噪声。

MB-System software packet is a new tool running in Linux for processing the multi-beam bathymetric data,which can edit the original and the beam data flexibly and display the results with its powerful plotting function.

MB-System软件包是一套运行于L inux系统下的针对多波束测深数据处理的软件工具，它可以对原始数据和波束数据进行灵活编辑，并利用强大的绘图功能对结果进行显示。

Methods: The algorithm is based on mixed integer linear programming in which binary and positive float variables are employed to represent beam orientation candidates and beamlet weights in beam intensity maps respectively.

本算法基于混合整数线性规划模型，使用二进制变量代表候选的射野方向，非负连续变量代表射野强度图中每个单元野的权重，采用一种确定性搜索策略同时优化射野方向和强度分布。

Here, the dual nonlinear tangental stiffness matrixes of binodal spatial beam element and triangular plate/shell element of 6 nodal DOF to Update\|Lagrange coordinate systems are derived, the incremental equation of virtual work is linearized to simplified calculation,beam\|plate coupling,deviation of principal nodes and subordinated no...

推导了三维桁元、梁元和三角形板壳元在UL描述下的双重非线性切线刚度矩阵，通过对增量形式虚功方程作线性化处理来减少计算量，考虑了梁／杆与板对应节点定位偏差和节点焊接安装误差，进而编制计算程序。

Base frequency of the buncher is 6 MHz, it can be used in bunching light ion beams as p or D, as well as heavy ion beams up to Cs, with beam utilization efficiency of 50 %—60 %, and pulsed beam width of light ions less than 1 ns.

聚束器基频为6MHz，可以对质子、氘直至铯等所有离子束进行脉冲聚束，束流利用效率可达50％—60％，质子等轻离子脉冲束的脉冲时间宽度小于1ns。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷