Plasma control in high-power CO_2 laser welding

Low Power Nd ∶ YAG Laser Welding of 18-8 Type Austenitic Stainless Steel

18-8型奥氏体不锈钢低功率Nd∶YAG激光焊接研究

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The influences of the filler metal powder on the laser power density threshold value, weld formation and process stability were studied during CO_2 laser welding of aluminum alloy.

研究了填充合金粉对CO2激光焊接功率阈值、焊缝成形和焊接过程稳定性的影响。

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By using MATLAB and ANSYS, laser welding temperature fields are calculated and simulated separately. Comparison between the two results has showed the precision of the models.

利用MATLAB软件及ANSYS有限元分析程序对激光焊接温度场分别进行了计算及模拟，并且将两种分析结果进行了比较。

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The paper aims at systematically studying the influence of laser-induced plasma on absorption loss of laser energy and the influence of assist-gas pressure on the plasma control in high power CO 2 laser welding.

研究高功率密度CO2激光焊接过程中光致等离子体对入射激光的吸收以及侧吹辅助气体对等离子体控制的影响。

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Development of Laser Welding Machine for I-125 Miniature Sealed Sources

I-125微型密封源激光焊接机的研制

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Laser Welding Mechanism and Parameters of Aluminum Matrix Composite SiCw/ 6061Al

铝基复合材料SiC W/6061Al的激光焊接

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Objective To observe the histological changes of nerve repaired by CO 2 laser welding and silk suture and investigate the advantages of laser welding.

目的：观察CO2激光焊接与线缝合神经吻合口的组织学改变，探讨激光焊接神经的优越性。

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On the lower-middle reaches, endeavors will be pooled to return the grain plots to lakes, dismantle embankments to remove barriers, dredge water channels, and build concrete dikes.

在中下游地区，退田还湖，拆垸清障，疏浚河道，修建钢筋混凝土堤防。

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The Importance of Supervisory Administration As Seen in a Case of Clearance Supervision

从清障监理看监理的重要作用

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Discussions on Clearing Technology of Former Foundation Piles for Jiangsu International Book Center

江苏国际图书中心原有基础桩清障工艺探讨

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In combination with the project performance, site geological and engineering conditions, the clearing technology is discussed;

结合工程实际，介绍了场地基本情况、场地工程地质条件，探讨了原有桩基础清障工艺，分析了清障作业的难点及拟采取的解决措施。

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Through measures of removal of illegal buildings, facade renovation, environmental beautification, resources integration, improvement of infrastructure, connotation of history and culture excavation, to raise the overall level of Weng jiashan village and improve residents living conditions.

通过拆违清障、立面整治、环境美化、整合资源、完善基础设施、挖掘历史文化内涵等改造措施，来提升翁家山村的整体品位，改善当地村民的生活条件。

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Taking the recovery work as an example, general conditions of equipments, construction principles and measures used in the work were introduced.

结合具体工程对全回转切割清障的工作原理以及对破损隧道切割过程中对完好隧道的保护措施等加以介绍。

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This paper mainly introduces the method about the system of different global positioning and depth measuring that is applied to the work of settling block to sweep bed in inland river channel, and this method is analyzed and compared with the traditional sweep bed practice.

本文主要介绍了实时差分动态定位数字化测深系统在内河航道清障扫床工作中的原理和方法，与传统的清障扫床方法进行了对比分析。

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Hydraulic sandblasting cutting with fire assembly is a newly developed cleaning-out and cutting equipment in oil and gas wrecking and firefighting.

水力喷砂带火切割装置是四川油气井灭火公司最新研制的一种油气井抢险灭火清障切割作业设备。

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Study of YAG Laser Ground Artillery Analogue Training Device

YAG激光地炮模拟训练器研究

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Outfitted with bristling laser batteries and thick neosteel armor, these imposing vessels are among the most powerful to be found in terran space.

这些配备着纵行排列的激光炮和坚固装甲的雄伟战舰是人族星空上最强的武器火力。

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Eight powerful laser turrets protected the sides of the ship, while quad cannon turrets covered the ventral and dorsal hulls.

八门强劲的激光炮保护着该舰的两舷，同时四联装加农炮塔掩护着腹部与顶部的船体。

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They also carried automated laser cannon turrets programmed to attack inceptor starfighters, along with armor plating and advanced shields that defended against both turbolasers and ion cannons.

并且导弹上还携带有用以攻击前来拦截的星际战斗机的自动激光炮台和能够抵御涡轮激光火力和离子炮轰击的装甲及护盾。

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Rational harmonic mode-locked fiber ring laser using a LD modulator

LD调制有理数谐波锁模光纤激光器

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