CO 2 gas was used as the shielding gas to eliminate porosities in deep penetration laser welding of low carbon steel in this paper.

Linage Processing on High-speed Photography of CO_2 Laser Welding Plasma

CO2激光焊接等离子体高速摄影照片图像处理

Influence of laser welding on crystallization behaviour of Zr_ ( 45) Cu_ ( 48) Al_7 bulk metallic glass

激光焊接对块体非晶合金Zr（45）Cu（48）Al7晶化行为的影响

Element mixing distribution and structure feature of fusion zone in laser welding between different alloys and pure titanium

异种合金与纯钛激光焊接熔焊区元素混熔分布及组织结构特征关于｛x／n｝的分布

The Mechanical Properties of Titanium Joined with Laser Welding by Pulsed Nd ∶ YAG Laser Apparatus

Nd∶YAG激光焊接钛的机械性能

Plasma control in high-power CO_2 laser welding

高功率CO2激光焊接等离子体的控制

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

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。

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。

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。

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

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

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。

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。

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

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

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。

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。

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。

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。

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。