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Sagittal focusing monochromatizing principle about beam is based on Bragg law (2dsinθ=nλ) and the monochromic beam is obtained by changing Bragg angle θ.

光束弧矢聚焦单色化原理是指以Bragg定律(2dsinθ=nλ)为基础，改变Bragg角θ，获得所需的波长λ来实现光束的单色化。

In this paper, according to the basic principle of light– ray propagation, the elliptic cylinder lenses have been designed and used to collimate the semiconductor laser beam. With the computer simulation by use of Matlab, the numerical results are given. The numerical results indicate that the divergence angle of the collimating beam could be as high as 0.1mrad.

在本文中，针对现在对半导体激光器准直的要求作者基于利用柱透镜对半导体激光器光束准直的理论分析，设计了利用椭圆面柱透镜对半导体激光器进行光束准直的方案，对半导体激光器发出的光束经过椭圆面柱透镜的光路进行计算，并且利用Matlab对方程进行求解及计算机模拟得到最终结果。

One slightly concave cylindrical lens combination is used to change one laser beam into small sector in small angle, and one reflector projects the laser beam to prism driven by a motor to rotate in high speed to produce one reciprocating and scanning small sector plane.

采用微凹柱面透镜组将激光光源发射的一束激光拉成具有微小夹角的小扇面，利用反射镜将此激光束透射到由电机驱动的高速旋转多面棱体上，使激光束产生一个小扇形往复激光扫描光平面。

Based on the traditional geometric optics principles and the method of ray tracking, this paper reports the calculation of the aberration of the mode index lens when the collimated beam incidents upon it inclinely with an angle, and the divergency of the output beam from the MIL when it works as a collimator for the end-butt coupling between the semiconductor laser and the waveguide.

本文从传统几何光学原理出发，用光线追迹的方法来计算研究准直光束斜入射到模折射率透镜上产生的像差，以及当半导体激光器与波导端射耦合以MIL作为准直透镜时，输出准直光束的发散情况，并探讨MIL在集成光学频谱分析仪中作为准直或会聚透镜的适用性。

The making process includes: setting insulating solid film on one horizontal rotating carrier with particle detecting unit and etching with single particle beam in the incident angle of 9.6-90 deg to penetrate the film, shifting the film relatively to the single particle beam and etching for the next time, and so on until the film is rotated by one turn to obtain truncated cone shaped, double turned truncated cone shaped or cylindrical single nanometer hole.

本发明将固体绝缘薄膜置于带有粒子检测装置的一个可水平旋转的载体上，用单粒子束刻蚀该薄膜，单粒子束入射角大于等于9.6°、小于等于90°，并且单粒子束在该薄膜底部、顶部、或二者之间与薄膜旋转轴交叉，待单粒子束完全穿透该薄膜后，固体绝缘薄膜底部的粒子监测器反馈使该薄膜被穿透处与单粒子束相对移动1荆再刻蚀，如此反复，直至固体绝缘薄膜旋转一周，获得圆台形、双倒圆台形或圆筒形的单纳米孔。

Based on the Bernoulli-Euler beam\'s plane cross-section hypothesis under flexure and Vlasov\'s rigid contour premise under non-uniform torsion,a spatial thin-walled beam element with 2 nodes and 14 DOF is developed by independently interpolating bend angles about two prime inertial axes of cross section and warp angle with an interior node set at the midpoint of the element length and the goal is achieved.

根据Bernoulli-Euler梁弯曲变形的平截面变形假定和Vlasov约束扭转的刚周边假定，通过设置单元内部结点，对弯曲转角和翘曲角采用独立插值的方法，建立了2结点14自由度的空间梁元，实现了上述目标，并将其应用到结构的非线性分析中。

When the optical fiber which is drawn by the magnetooptic glass with the rodintube method is put in the magnetic field produced by Helmholtz coil and while the linearlypolarized beam goes through the fiber, the polarization plane of the linearly polarized beam is rotated to a certain angle.

将采用模管法拉制成的磁光玻璃光纤置于亥姆霍兹线圈产生的磁场中，当线偏振光通过该光纤时，其偏振面旋转一定角度，把该角度转换成光信号的强度，然后再用仪器进行检测。

In order to obtain symmetry and parallel polarized light,the double Wollaston prism is amended. After getting symmetric polarized light at a big splitting beam angle,an ordinary triangular prism is added so that the symmetric light beam can be divided into parallel light beams.

为了获得对称且平行分束的偏振光，对双Wollaston棱镜进行了修正，在获得大分束角的对称偏振光后，配合普通玻璃三棱镜，使对称分束光变成平行分束光，通过改变三棱镜与双Wollaston棱镜间的距离来改变平行光的剪切距离。

In order to obtain symmetry and parallel polarized light, the double Wollaston prism is amended. After getting symmetric polarized light at a big splitting beam angle, an ordinary triangular prism is added so that the symmetric light beam can be divided into parallel light beams. The distance between the triangular prism and the double Wllaston prism is changed so that the distance of the shearing parallel light can be changed.

为了获得对称且平行分束的偏振光，对双wollaston棱镜进行了修正，在获得大分束角的对称偏振光后，配合普通玻璃三棱镜，使对称分束光变成平行分束光，通过改变三棱镜与双wollaston棱镜间的距离来改变平行光的剪切距离。

And this paper also shows the structure and parameters of the optical system. The Xenon light of super high voltage is used as interferential source. The position of it is on the focus of the reflector of ellipsoid surface. After reflecting, its lights form a collective point . This point and objective focus of collimation lens are superposition. Though the collimation lens, the beam of light become parallel lights. Then though the Coude Reflector and radiation system of special prism, the lights become a beam of light with 3 ° emanative angle.

该光学系统选用超高压氙灯作光源，使其位于椭球面反射镜的一个焦点上，发出的光线经椭球面反射后所形成的汇聚点与准直负透镜组的物方焦点重合，光束经准直系统后变为平行光束，此平行光束再经库德反射镜和特殊发散棱镜系统，形成具有3°发散角的发散光束，用来干扰敌方设备。

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。