激光

The accoustic emission induced by multi-pulse laser thermal shock was acquisited and used to determine the damage fatigue threshold and fatigue threshold.

根据声发射信号确定了不同载荷作用下的激光热疲劳损伤阈值和热疲劳寿命；用超声的方法确定了PMMC的激光热-力疲劳损伤参数。

Laser Solid Forming was an advanced fabrication technology that developed from Rapid Prototyping technique in 1990s and progressed very fast in the recent years. It has a promising future since a density metal component can be rapidly deposited by laser cladding metal materials additively.

激光立体成形技术是于二十世纪九十年代在快速原型技术的基础上发展起来的一项新的先进的制造技术，该技术采用同步送粉激光熔覆方法沿高度方向逐层堆积金属粉材，从而最终获得三维实体零件。

The parameter acceleration is also affinitive with hydrodynamics in flows.

激光的广泛应用已经扩展到流体力学领域，如激光多普勒测流速，而加速度的量也与流体的动力学过程密切相关。

Under the model of local thermody n amic equilibrium, the electronic temperature of Cu plasma are deduced to be in t he 104 scale by the relative line intensities. Finally, space characteristics of electron temperature are obtained near the target, the strength and FWHM of N 500.52 nm spectral line are analysed.

在局部热力学平衡条件近似下，根据谱线的相对强度，得到了等离子体电子温度约在104 K以上，给出了靶面附近电子温度的空间演化规律，并探讨了N500.52 nm谱线的谱线强度和半高全宽随激光能量的变化规律标签激光烧蚀谱线展宽电子温度 Laser ablation Line-Broadening Electron temperature

Changes of the blood gases and acid-base status of eleven healthy adult horses be-fore and after anesthetization kith Jing-Song-Ling,Chloral Hydrate and Laser were monitored with model DH-100G blood gas and acid-base analyzer.

以动脉血气分析做为手段，对静松灵、水合氯醛、激光三种麻醉方法进行评价，激光麻醉对实验马血气及酸碱值没有显著影响；静松灵（1mg／kg体重，im）和水合氯醛（128／100kg体重，iv）都能使PO＿2、Sat·O＿2、C－O＿2等显著下降，但水合氯醛出现较早，在注射后30至60min时最低；而静松灵出现较晚，以注射后60～90min显著，但都未构成低氧血症，更未达呼吸衰竭。

A high2efficiency coupling system was designed by using t heo ry of optical fiber coupling for t he high2power laser and t he beam t ransform , and in t he system numerical values of lens′apert ure and focus were optimized.

本文针对工业用大功率固体激光的特点，对光纤耦合系统的光束变换，大功率激光聚焦耦合的束宽等影响光纤耦合效率的问题进行了分析。

The propagation property of apertured laser beams (propagation and control of actual high-power lasers) is a complicated and challenging subject in the field of high-power-laser technology and a frontier subject many researchers devoting to.

受光阑限制光束传输特性(实际强激光的传输与控制)是强激光技术研究领域中面临的具有相当的复杂性和挑战性的课题，也是国际同行们正在努力研究的前沿课题。

The experimental results are shown that the microstructure of QT600-3 by CO_2 laser quenching is Aphanitic Martensite+Graphite,and residual stresses are all compressive,which is above 120 MPa,they increase with laser power.

结果表明：经CO_2激光淬火后QT600-3的显微组织为隐晶马氏体+石墨，残余应力均为压应力，其值在120 MPa以上，且随着功率的增大而增加；相变层深度随着扫描速率和光斑直径的增加而减小，且随着功率的增大而增加；激光淬火后的材料组织结构比较均匀，有利于提高凸轮轴的使用寿命。

System computes combined navigation system of GPS/IMU, VECTOR and ascendable geometry stable platform, proceeds in space registration and time synchronization, calculates the systems accurate space, time, stance and course. Planar laser scanning data was filtered, registered space-wisely and time synchronously and fuse computered with other sensors data, extracted to 3D solid model of characteristic information of the road and outside of street, continuously extracted to point, line and plane, reconstructed combined with CCD camera data and visualized to 3D model true scene, finally implement acquisition and process of 3D space data timely, initiatively and integrally.

该套系统通过对GPS/IMU组合系统导航解算、VECTOR和升降几何平台进行空间配准、时间同步处理，计算出系统精确可靠的空间时间和姿态航向信息，二维激光扫描仪数据经过滤波去噪、和其他传感器数据融合、三维空间计算，解算出道路和两侧街景的三维空间数据模型，对空间激光数据模型提取点线面特征值，结合CCD相机数据进行立体重建和可视化，实现了实时、主动、完整地获取和处理三维空间数据信息。

System computes combined navigation system of GPS/IMU, VECTOR and ascendable geometry stable platform, proceeds in space registration and time synchronization, calculates the system??s accurate space, time, stance and course. Planar laser scanning data was filtered, registered space-wisely and time synchronously and fuse computered with other sensor??s data, extracted to 3D solid model of characteristic information of the road and outside of street, continuously extracted to point, line and plane, reconstructed combined with CCD camera data and visualized to 3D model true scene, finally implement acquisition and process of 3D space data timely, initiatively and integrally.

该套系统通过对GPS/IMU组合系统导航解算、VECTOR和升降几何平台进行空间配准、时间同步处理，计算出系统精确可靠的空间时间和姿态航向信息，二维激光扫描仪数据经过滤波去噪、和其他传感器数据融合、三维空间计算，解算出道路和两侧街景的三维空间数据模型，对空间激光数据模型提取点线面特征值，结合CCD相机数据进行立体重建和可视化，实现了实时、主动、完整地获取和处理三维空间数据信息。

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