laser 四级六级考研GMAT

An all-fiberized master oscillator power amplifier(MOPA) structured pulsed Yb fiber laser is reported.

报道了一台全纤结构主振荡功率放大(MOPA)型掺镱脉冲纤。

The mechanism of filamentation formed by femtosecond pulse laser beam propagating in atmosphere is investigated.

分析了飞秒脉冲在大气中传输时丝的形成机理。

It has a laser welder, a video display screen, and a buzzsaw.

它装备了一部焊机、一部视频显示屏和一个圆锯。

Sophisticated laser experiments are performed regularly in the laboratory.

复杂的实验定期在实验室举行。

(2) the mechanical excircle drum scanning laser imager.

2．板滞式边方滚筒扫描平照排机。

And traditional rotating mirror, bolographic refringence microscopic engage laser beam scanning in sencitivity on imamging.

和古板回旋扭转镜背不同，全息不直射镜也是让平束扫描在感平质料上成像的机构。

The morphologies of several polyfluoroethylene oils were studied by small angle laser light scattering.

本文用散射及偏显微镜等技术剖析了几种氟油的聚集态结构。

At present there exist two kinds of manufacturing met hods for silicon-based lasers,i.e.,heteroepitaxy and bonding.

目前制作硅基的方法主要分为两类，异质结外延生长和异质材料键合。

It's more automatable and easier to repair shafts using laser overlaying welding technology.

数控编程等手段的运用大大提高了工作效率 ,也降低了现场操作的难度。

To verify the curative effect of He-Ne laser in the treatment of acne indurate cystica.

验证氦氖治疗结节囊肿性痤疮的疗效。

Objective To evaluate the treatment effect of gingivoplasty with Argon laser.

目的评价氩离子龈成形术临床使用效果。

Intersatellite laser communication is the best way to solve bottleneck intersatellite communication.

卫星通信是解决星间通信"瓶颈"的最佳方法。

The method of two point probe focus is proposed to resolve the proble m of the jog of focus, and unitization processing is used to eliminate the chang e of laser power.

提出了采用两点探焦法解决刻划时焦点的跳动问题，采用归一化处理消除强波动对调焦精度的影响。

The gain characteristics of the collective free electron laser operating in a superradiant amplifier have been studied through the variation of the interaction length and pumping magnetic field.

工作在超辐射模式下的集体区自由电子的增益特性研究可以通过改变互作用区长度及泵浦强度来进行。

Some theories related to particle scatterance and the structure as well as the fundamental principle of the facilities for testing laser signal from multiple angles have been introduced.

介绍了粒子散射相关理论以及粒子信号多角度检测装置的构成与基本原理,并详细描述了对烟与干扰气溶胶粒子的多角度散射特征进行采集、处理和分析的过程。

A new type of digital phasometer applied to the infrared laser position-tracking system of mine hoister is introduced in the paper,which is based on FPGA and FFT algorithm.

主要介绍了在矿井提升机红外位置跟踪系统中一种新型数字鉴相的研究方法,该方法是基于FPGA件运用FFT算法完成的。

The ships are fitted with C- and S-band monopulse tracking radar, Cinetheodolite laser ranging and tracking system, velocimetry system, and onboard computers to track and control the spacecraft.

测量船配备有C-和 S-波段的单脉冲跟踪雷达，测距经纬仪和跟踪系统，测速系统和舰载计算机去跟踪和控制宇宙飞船。

The crymotherapy, the acupuncture point bury the line, the needle long time, the laser, the micrite to rub the skin and so on to belong to the physiotherapy.

冷冻疗法、穴位埋线、针久、、微晶磨皮等都属于物理疗法。

Quantum well intermixing induced by impurity diffusion has been used in fabricating nonabsorbing windows in the cavity facets to improve the output power of high-power laser diodes.

杂质扩散诱导量子阱混杂技术可用于制作腔面非吸收窗口, 提高大功率半导体的输出功率。

Murphy's primary method will be something called "laser ranging."Light from a laser fired from the Earth could hit a reflector on the surface of the moonbounce back.

Murphy的基本方法将是"测距"，从地球上发出的打射到设在月球表面的反射上，反射回地球。