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The surface roughness of the laser shock peened medium has effect on the high frequency of laser-generated surface acoustic waves. As the impact times of the laser shock peening increase, the surface roughness has little effect on the dispersion of laser-generated surface acoustic waves. From the theoretical curve and experiment curve, it can ...

本文研究的结果，可对研究样品激光冲击硬化后残余应力、晶粒方向改变和错位密度增加分别对激光声表面波色散影响提供了基础，并对利用激光声表面波的色散特性来研究激光冲击硬化材料冲击层材料性质的变化具有一定的意义。

In this thesis, Based on the advantages of diode-pumped solid-state laser in Chapter 1, the development of diode-pumped solid-state laser is introduced. The trends of DPSSL are pointed out, the wide application fields ,as well as the bright market future of high power DPSSL are also summarized. In the Chapter 2 , all kinds of solid-state laser gain materials are introduced in detail. In the Chapter 3 , the theory on the mode-matching of the pump beam and the cavity mode is analyzed in detail based on the basic theory and work principle of LD-pumped all-solid-state laser.

本论文第一章从二极管泵浦固体激光器的优势出发，介绍了二极管泵浦固体激光器的发展，指出了DPSSL的发展方向，概括介绍了大功率DPSSL的诸多应用领域和广阔的市场前景；第二章对固体激光增益材料作了详细的介绍；第三章基于LD泵浦固体激光器的基本理论和工作原理，从理论上详细分析了LD端面泵浦激光器中泵浦光与腔模的匹配问题。

Methods First, 704 patients receiving CO2 laryngeal laser operation from July 2, 2003 to August 21, 2008 were enrolled, and their risk events and causes were systematically analyzed. Second, in vitro experiment, we tested the tolerance of the PVC tube against different CO2 laser energy in different cutting patterns when the cuff was inflated in water or air. We also tested the combustion conditions of the PVC tube in different oxygen concentration, laser energy and cutting patterns. Results Tracheal cuff were punctured by the laser in 92 of all 704 cases. Spark and dense smoke were observed in 8 and 37 cases respectively.

一是统计和分析我院2003年7月2日至2008年8月21日进行的704例喉二氧化碳激光手术所发生的危险情况；二是通过体外试验，观察注水和注空气时气管导管套囊在不同激光能量和不同激光切割方式下对二氧化碳激光的耐受情况，以及PVC气管导管在不同氧浓度、不同激光能量和不同激光切割方式下的燃烧情况。

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。

Our products include Laser Trimmer,Laser Via Hole Driller,Laser Scanning Deflasher,Laser Glass Cutter and PDP/LCD Repairing System.

包括：激光修调机，激光钻孔机，激光玻璃切割机和PDP/LCD修复设备等。

According to the emphatic analysis of processing,the 4 kinds of laser damage-free cutting methods,including traditional optimized parameter method,laser multiple-pass cutting,laser cutting with controlled fracture by stress guiding method and aided laser cutting method,are summarized.

介绍了硬脆性陶瓷激光切割技术研究的若干新进展，着重从工艺角度系统地分析总结了激光加工陶瓷减少热损伤的4大类型：传统工艺的优化参数法、多道切割法、应力引导控制裂纹切割法以及辅助切割法。

Products Victoria Green laser printing plant is part of Garbo Jinjiang Co., Ltd., in 2004 from the United States introduced a complete set of laser equipment and the employment of professional and technical personnel, professional production of laser heat transfer, sewing, leather art, such as laser engraving products, production could reach more than 20,000 designs.

青利激光厂隶属于晋江嘉宝印花有限公司，于2004年从美国引进全套的激光设备并聘用专业技术人员，专业生产镭射烫画、布艺、皮艺等激光雕刻类产品，日产量可达到两万多个图案。

The laser scan system comprises a laser machine and a laser scan head, the paving system comprises an elevator platform and a scraper mechanism, the control system edited by the VB language administers the laser and paving systems to implement the layer additive process via control cards and the human-machine interface.

雷射扫描系统由雷射机与雷射扫描头组成；铺料系统由升降平台及刮料机构组成；控制系统使用VB语言撰写控制程式，经由人机介面与控制卡，控制雷射系统与铺料系统进行叠层加工。

The Company's main products are FPC laser cutting machine, SMT laser cutting stencil, PCB laser cutting machine, a series of stencil, such as laser cutting machine.

本公司的主要产品有FPC激光切割机、SMT激光模板切割机、PCB激光切割机、等一系列的模板激光切割机。

The Company's main products are FPC laser cutting machine, SMT laser cutting stencil, PCB laser cutting machine, a series of stencil, such as laser cutting machine.

本公司的主要产品有FPC激光切割机、SMT激光模板切割机、PCB激光切割机、金属激光切割机、FPC/PCB及非金属激光切割机、激光焊接、激光抛光、SMT印刷模板等一系列的激光切割机和焊接机。

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。