查询词典 laser printer

The laser-cladding layeron the alloy consists of matrix phase of over-saturation solid solution γ and complexhexagonal carbide M_7C_3. Under certain condition, with fast laser scanning speed, the oversaturation solubility of elements increases in γ, and the precipitation of the complexcarbide M_7C_3 decreases, so that the microhardness increases and the wear resistance de-creases. But at slower laser scanning speed, more complex carbide M_7C_3 may precipitate, andthe wear resistance may be improved. Therefore, it is believed that the principal factor in im-provement over wear resistance is the precipitation of carbide M_7C_3, while overmicrohardness is the over-saturation solubility of elements in matrix phase.

表明：(1)激光熔覆合金层是由过饱和的γ基体相和复杂的六方M_7C_3碳化物相所组成(2)在其他参数不变的情况下，随激光扫描速度的提高，γ基体相过饱和度增大，而析出的碳化物含量减少，因而合金层的硬度升高，耐磨性有所下降；而降低激光的扫描速度，碳化物M_7C_3析出增加，有利于提高合金层的耐磨性、因此碳化物M_7C_3析出量是提高耐磨性的主要因素，而增加基体相γ的过饱和度则是硬度提高的主要因素

Contrast to other pulse laser lithotrities, which ground on photomechanical effects, such as laser induced plasma and cavitations, Cr,Tm,Ho:YAG laser lithotripter has many advantages. It will be an important therapy to the ureteral calculi.

相对于其它利用激光诱导等离子体及空化作用等光机械效应碎石的脉冲激光碎石机，钬激光碎石机具有较大的优势，必将成为输尿管结石的一种重要的治疗手段。

When the peak intensity of the laser pulse exceeds the relativistic laser intensity, the electric field parallel to the propagation direction of the laser will emerge by rather large amplitude under the effect of the ponderomotive force.

激光的有质动力加速是指当激光强度大于相对论光强时，除了电子的横向振动，激光的振荡电场在有质动力的作用下将产生极大的沿激光传播方向的分量。

Ponderomotive force of laser beam propagating in plasma could become stronger as the intension of laser beam strengthening , and in fluid mechanics ponderomotive force is related to implicate term, so implicate term could become stronger as laser beam's strengthening and couldn't be ignored.

当在等离子体中传播的激光脉冲达到一定强度时，有质动力会变得比较强。而在流体力学方程中有质动力一项与牵连项相关。因此当激光达到一定强度的时候，流体方程中的牵连项也会变得比较强，不可以被忽略。

HUAMEI company was founded in 2002 with registered capital of RMB2,000,000.We are the biggest professional high-tech company speicilize in the development,produce,sales and service of the laser medical equipments in the area of East China.Our quality products are hot selling items both in domestic and some southeast asian countries as Japan,Korea etc.We enjoy sound reputation in the medical beauty field for our durable machines and good service.successfully develop the E-ROSE series of high-tech beauty equipments as IPL skin softer;IPL hair removal;IPL wrinkle smoother;Laser body slimer;Laser pigment curer etc.

潍坊华美电子有限公司创建于2004年，注册资本200万，是华东地区规模最大的从事激光医疗设备研发、生产、销售、服务为一体的高科技公司，产品畅销国内、日本、韩国等东南亚各个国家，在医学美容领域享良好声誉，公司精心研发了伊露姿系列光子嫩肤仪、光子脱毛仪、光子深层除皱仪、激光纤体仪、激光色素治疗仪等高科技美容器械，公司产品广泛应用于各大中型医院、专科医院的皮肤科、整形美容科、专业美容院，深受广大客户和患者的欢迎。

Technology of laser hardening surface of diesel locomotive camshaft using austenite-bainite nodular-iron instead of 20Cr has been systematically elaborated on,which includes a series of measurements such as mechanism of choosing austenite-bainite nodular-iron and it's pretreatment,ascertaining laser technological parameter,spiry laser scanning strip,designing four-motor control devise using microcomputer and so on.

阐述用奥贝球铁代替 2 0Cr制造内燃机车凸轮轴的激光表面强化的工艺过程，其中包括奥贝球铁的选择、激光工艺参数的确定、螺旋激光扫描带、四联动微机控制装置的设计等。研究表明，用奥贝球铁代替 2 0Cr制造凸轮轴，经激光表面强化后，能获得更均匀的硬度分布和更高的硬度值。

Objective To compare the postoperative visual quality after: laser in situ keratomileusis, laser-assisted subepithelial keratectomy and epipolis laser in situ keratomileusis.

目的 比较LASIK，LASEK与Epi-LASIK 3种不同的准分子激光手术术后患者视觉质量的差异。

This study used the pick-up head from the commercial DVD-ROM as the basis for optical path, and drilled a 2mm hole on the focusing object lens. After combined with the design of a beams plitter, the laser beam source of the two DVD formed two in-line laser beams. One laser beam passed through the undrilled part, and focused on the surface of the object to be tested, in order to measure the displacement variance of the surface.

於三自由光学测探头的研制上，则将DVD 探头之聚焦物镜做一2mm 的穿孔，於搭配一分光镜的设计后，使个DVD 的光源形成同轴光束，将其中ㄧ光束经由聚焦物镜未穿孔部分，聚焦於待测物表面，用以测待测物表面的位移变化，另一光束则穿透过聚焦物镜穿孔部分，直接将光束投射至待测物表面，作为待测物表面之个角的变化测。

Base on the design of the current laser energy meter, laser materials with better transparence, thicker absorbing layer and thermal sensitivity surface unsusceptible to damage were chosen, the temperature sensor and the digital processing circuit in the energy meter were redesigned to meet the requirements of laser energy metrology in field.

在现有激光能量计的基础上，通过选择相对透明、吸收层相对较厚、热敏面不易损伤的激光吸收材料，对激光能量计内置温度传感器及数字处理电路进行了重新设计，满足了不同温度条件下现场能量测量的需求。

Such as: calibrating the laser system, calibrating the measurement region and focusing the CCD camera for the diffuser passage with complex shape, selecting the best incidence angle for the laser sheet,, setting the time parameter including the time between pulses and the time between records, designing the laser system, and selecting water fog with 1～5μm diameter as seedings for PIV measurement after comparing several particles. All of the work is useful to accumulate the PIV measurement experience in turbomachinery. 2. Experimental research of the unsteady flow in diffusers The instantaneous velocity fields within the vaneless and vaned diffuser were measured by using PIV technique.

本文在国内首次进行PIV测量系统对离心风机扩压器内部非定常流动的测量，为此，作者作了必要的实验前期工作：双谐振激光器工作特性的标定；针对扩压器复杂的流道形状，解决了片光源照射区域位置的标定和CCD相机的聚焦等问题；为复杂流道形状的扩压器内部流动的PIV测量选择了最佳片光源入射角度；选择了合适的PIV测量时间参数；为实现非定常内流的PIV测量设计了PIV系统的光路布置；根据非接触测量示踪粒子的选取原则，对几种示踪粒子进行了筛选，最终1～5μm的水雾粒子在本文实验条件下获得最佳效果。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切