激光

The apparatus regards the laser beam, emanating from the laser device, which can emit the perpendicular laser to the earth, as the measuring norm. The facula on the autodyne, which clings to the guide way during the measuring, is sampled to computer with a CCD camera and an image acquisition card. By computer image proce~sing, the measuring apparatus can identify the displacement of the facula center .By this way it determines the verticality error of the guide way at the measuring position, which can be recorded automatically at the same time.

该测量仪以激光自动安平垂准仪发出的激光为基准，紧贴导轨运行的接收装置上的光斑经CCD相机和图像采集卡采集到计算机后，通过计算机图像处理识别出光斑中心的位移量来确定电梯导轨在测量位置的垂直度偏差，同时自动记录测量所在位置。

Therefore, it has important theoretical significance and practical value that develop the investigation on the NC automatic programming for laser cutting.

因此，开展激光切割数控自动编程的研究，具有较大的理论意义与实际应用价值，同时对降低国外同类激光切割的数控自动编程的软件的价格有重要作用。

This paper describes the basic principle of velocity pursuit guidance law and body pursuit guidance law of trajectory correction projectiles , researches the terminal correction trajectory and miss distance under pursuit guidance laws by 6—DOF trajectory simulation program, researches the orbit of laser detector ray axis and ground projection area of laser detector spatial viewpoint.

文中对速度追踪制导律和弹体追踪制导律的工作原理进行了研究，利用六自由度弹道仿真程序对弹道修正弹两种追踪方式下的末段修正弹道和脱靶量进行了对比计算，研究了两种追踪方式下激光探测器光轴的轨迹及激光探测器空间视场在地面投影区域的变化；弹体追踪方式命中精度虽然较低，但由于工程实现简单、成本低，仍有其工程使用价值。

A new concept that the roll surface can be hardened proportionally according to its abrasion curve by using laser treatment technique was put forward.

提出了一种利用激光表面处理技术对辊面按磨损程度进行等比例强化的概念，即在获得轧辊准确磨损规律的基础上，针对不同部位调整激光工艺参数，在辊面形成合理的淬硬层搭配，达到轧辊表面磨损均匀化、提高轧辊综合使用寿命和降低辊耗的目的。

The optical bistable is observed because the absorption for laser reduces with the increasing of the pump power.

饱和吸收体对激光的吸收系数随抽运光强的增加而减小，形成了输出激光的光学双稳态特性。

Boron carbide films were prepared by pulsed laser deposition in vacuum using sintered B4C as raw material.

本论文的第二部分内容是采用脉冲激光沉积方法制备CN、BC和BCN系列薄膜，开展脉冲激光烧蚀在薄膜材料制备上的应用。

The main problems in boron carbide ceramic machining are introduced,and the laser technique is used to machine boron carbide.

介绍了碳化硼陶瓷加工中存在的主要问题，将激光技术应用于加工碳化硼陶瓷上，研究出一种新型加工方法，设计出两种有效的激光切割方法并对碳化硼陶瓷进行切割。

In this article both stereo vision and line2laser scan sensor are integrated to CMM,according to this measuring system the bound2 aries or outlines of object are obtained by stereo vision and the ostensible data of object are achieved by line2laser scan sensor. Information fusion of multi2sensor can be utilized to segment 3D data、to abstract the geometry characteristic of the object、to construct the object modeling.

将立体视觉和线激光扫描传感器集成到三坐标测量机下，由立体视觉来获得物体的边界或轮廓信息、线激光扫描传感器获得物体表面的三维数据，利用多传感器的信息融合技术对三维数据进行分割，提取被测物体的几何特征，并在此基础上构建物体模型。

The curve of surface boundary is generated according to these points.

4对于线扫描激光传感器无法测得的边界信息，提出根据三目视觉获得的物体三维边界运用B样条曲线延拓技术使得激光线条中含有准确的边界信息；同时利用B样条曲线插值技术完成在延拓区间内的数据添加，从而提高建模的精度。

The principle is using thefast breakover of avalanche transistor drive the electron tube. The full time of 4200Vvoltage is about 20ns. The circuit can normally work under 100kHz frequencies.Design an extra fast Q-switch circuit by series arrangement of avalanche transistor.

本论文主要做了以下几方面工作：1、推导了重复率激光基本参数(脉冲能量、脉冲宽度和峰值功率)与周期的关系，并且分析了重复率激光系统运转的稳定性。2、设计了雪崩管-电子管退压电路，由雪崩管驱动电子管开关，4200V高压退压沿20ns左右，能够在100kHz频率下工作。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新