A numerical method is presented for the two dimensional quasi steady state heat transfer on high power density laser welding processes according to the keyhole model.
对高能量密度激光匙孔焊接过程的二维准稳态传热进行了计算方法的研究。
The motion equation satisfied by an induced polarization of a two level atom interacting with laser pulse is derived by using a nonperturbation method.
通过非扰动方法导出了与线偏振激光脉冲相互作用的二能级原子的诱导极化所满足的运动方程。
It also involves the design method, principle of two-frequency laser gauge meter and the result of verifications of standard devices using the gauge.
并介绍了双频激光同轴量规计的设计方法、工作原理及利用它对标准件定标的情况。
This paper studies the relaxation in the two—Level system of the Laser superradiation interacted with radiation by the method of coherence, and gives the solution of light field about sgn.
用相干态方法研究了与辐射相互作用的超辐射激光二能级系统的弛豫，给出在光场高温和低温两种极限情况下准几率密度函数方程的解。
The YVO4 crystal fibers were grown by laser heated Pedestal growth (LHPG) method utilizing two CO2 sources.
采用激光加热基座(lhpg)法，用两束CO2激光加热生长yvo4晶纤。
The marking is the marking of the spare part, it prints a method to have printing ink to print two kinds of method with laser, the printing ink prints to have convenience, price cheapness etc.
标记是器件的标识，其打印方法有油墨打印和激光打印两种方式，油墨打印具有方便、价格便宜等特点，而激光打印具有打印字迹清晰、存留时间长等特点。
The particle sizes measured by elutriation method and laser particle size analysis are bigger than those by the other two methods due to aggregation.
采用淘析法、激光粒度分析法、渗透过滤法、显微镜法对膨润土及石英的粒度进行测量比较分析。
Based on laser threshold value method, central wavelengths of two kinds of phosphate laser glass used in high-power solid-state laser segment amplifiers are tested.
利用激光阈值法对两种应用于高功率固体激光片状放大器中的磷酸盐激光玻璃的中心波长进行了实验测试。
A precision measuring method and unit with two modes laser without guide for large size workpiece are presented in the paper.
介绍一种可对大尺寸工件进行无导轨精密检测的方法及装置。
The method of trace detection of benzene, toluene, ethylbenzene, and xylene(BTEX) was studied in ambient air using laser two-photon ionization.
利用激光双光子电离技术研究了在大气压力下探测痕量苯系物的方法。
Using molecular dynamics method combining with two-temperature model, the progress of femtosecond laser-metal interaction is described completely at both continuum and atomistic length scales.
采用耦合一维双温模型的分子动力学方法，从连续及原子级的角度详尽描述了飞秒激光与金属的相互作用过程。
With the method of molecular dynamic simulation combined with the two-temperature model, the physical process of fs laser ablating nickels was theoretically simulated.
并数值模拟了实验室参数条件下飞秒激光烧蚀金属镍的物理过程及特征。
Method: 108 patients were divided into two large groups randomly, 56 groups were in semi-conductor laser therapy, 52 groups were in ultrashort wave Chinese treatment iontophoresis.
方法：108例入组患者，随机分为2组，56例半导体激光治疗组，52例超短波中药离子导入治疗。对两组病例的治疗疗效做出比较。
On the basis of a thoroughgoing study of the principle of laser triangle measuring method, a laser two-triangle measuring system for 3-d...
本文在深入研究激光三角测量原理的基础上，提出了一种三维曲面的激光双三角测量法，并给出了设计要点。
On the basis of a thoroughgoing study of the principle of laser triangle measuring method, a laser two-triangle measuring system for 3-D curved surface is described.
本文在深入研究激光三角测量原理的基础上，提出了一种三维曲面的激光双三角测量法，并给出了设计要点。
A two-beam technique has been presented as a new method to adjust laser-ablation rate. An adjust accuracy of about two orders of magnitude higher than that in usual one-beam technique was obtained.
提出了一种精密调节激光烧蚀速率的方法——双光束技术，得到了比单光束技术约高两个数量级的调节精度。
Methods Semiconductor laser was compared with conventional NaF method for the treatment of 100 teeth with typical hypersensitive dentine which were divided into two groups.
方法牙本质过敏的患牙10 0颗，分为两组，一组用半导体激光治疗，一组用常规氟化钠脱敏。
Two-photon photopolymerization (TPP) with femtosecond laser is a promising method to fabricate three-dimensional (3D) photonic crystals (PCs).
在加工三维木堆结构光子晶体方面，飞秒激光双光子光聚合是具有广泛应用前景的方法。
Two-photon photopolymerization (TPP) with femtosecond laser is a promising method to fabricate three-dimensional (3D) photonic crystals (PCs).
在加工三维木堆结构光子晶体方面，飞秒激光双光子光聚合是具有广泛应用前景的方法。
应用推荐