查询词典 synchronizing pulse

Analyses show that refractive index changeinduced by thermal effect is similar to the change induced by other effects for linearabsorption,if laser pulse width is far less than the characteristic time of sample,i.e.refractive index change is directly proportional to spatial part of incident pulse laserintensity,so time averaged nonlinear refractive index can be defined.

结果表明，当激光脉冲宽度远小于被测样品的特征时间时，对于线性吸收来说，其热效应产生的折射率变化与其它效应产生的折射率变化有类似的形式，即与入射脉冲激光光强的空间部分成正比。因而可定义时间平均非线性折射率。在这种情况下，可用通常的Z-scan法进行非线性折射率及热光系数的测量，所得结论符合以前的实验结果。

The effects of the braking pulse on vehicle dynamics and on the driver's steering activity depending on the pulse length ΔT have been investigated.

的影响制动脉冲对车辆动力学和司机的指导活动取决于脉冲长度ΔT场进行了调查。

This way the number representing the pulse length is saved, while the counter can be cleared ready to measure the next pulse.

这样的数目代表脉冲长度是保存，而反可清除作好准备，来衡量未来的脉搏。

It was found that the pulse distortion can be quite severe depending on frequency, pulse width ,and path length.

应用傅立叶时域积分近似解方法对毫米脉冲波通过雨媒质时的传输特性进行了研究和分析，得出了脉冲畸变随频率、降雨率、脉冲宽度及传播距离的变化关系，讨论了脉冲展宽与压缩随传播常数二阶导数的关系。

The influences of dispersion length and nonlinear length on the pulse′s self-similar evolution are studied,and the self-similar evolution conditions of the input pulse are obtained.

研究了色散长度和非线性长度对脉冲自相似演化的影响，获得了放大器中脉冲实现自相似演化的条件。

The pulsed Nd:YAG laser cladding is one of the most effective methods of the precise repairing technology. It is decided by the voltage, electric current, pulse length, pulse frequency, scanning speed and beam diameter of the Nd:YAG laser.

脉冲Nd：YAG激光熔覆技术是精密修复塑料模具最有效的方法之一，激光器的电压、电流、脉冲宽度、脉冲频率与激光的扫描速度、光斑直径等工艺参数直接影响着熔覆的质量。

The word '' pulse '' in the term '' Pulse-Code Modulation '' is somewhat confusing, as there appear to be no "pulses" per se anywhere to be found except in the transmission line.

脉冲」一词用在「脉冲编码调变」中似乎显得令人困惑，因为除了在电线中的电力以外，并没有任何明显可见的「脉冲」。

Laser ultrasonic technique is a new technique that absorbs high-energy laser radiancy making use of metal surface, so, material is quickly heated, generate oscillation and generate ultrasonic pulse. The principle of actuating ultrasonic pulse has two kinds of elasticity actuating and ablation actuating.

激光超声技术是利用金属表面吸收高能激光辐射，引起材料快速加热，产生振动，发出超声脉冲的一种新技术，其激励超声脉冲机理有弹性激励和热烧蚀激励二种。

The research work presented in this dissertation focused on developing the scheme and techniques of OPCPA. This dissertation gives the results of the theoretical and experimental investigation on OPCPA scheme. The validation of OPCPA at high energy level was demonstrated successfully. And some important results were achieved. Several key techniques related to developing table-top ultra-intense and ultra-short OPCPA laser system were put forward, for example, the generation of femtosecond seeding pulses, the precisely temporal synchronization of the pump and signal pulses, the pulse stretching and recompression, the OPCPA process with high energy conversion efficiency and etc. Based on the integration of these key techniques, a 1.46-TW/153-fs OPCPA table-top ultra-intense and ultra-high laser system has been developed, which, to the best of our knowledge, has generated laser pulses with the shortest pulse duration and the highest peak power among the joule level OPCPA systems in the world.

本学位论文工作主要是瞄准 OPCPA 这一国际上提出不久并处于初级阶段的新概念，重点开展了 OPCPA 新原理的理论模拟、实验验证，以及基于 OPCPA 新原理的小型化超强超短激光系统的研究与发展，创造性地解决关键科学技术问题，建立并发展相关关键科学技术，如超短脉冲种子源的产生、小型化强激光泵浦源的研制及其脉冲的整形、信号光与泵浦光的精确同步、高效率光学参量放大及高保真脉冲展宽与压缩等关键技术，并在单元技术的总体集成方面取得了重大创新性进展与突破性研究成果，获得了国际上高量级泵浦条件下 OPCPA 激光研究中峰值输出功率最高且脉冲宽度最短的总体领先结果。

The analysis of pulse testing system using the reflectometer further shows that the reflectometer can be used for pulse test system.

又对一种反射计法脉冲测试系统分析，进一步说明反射计可用于脉冲测试系统中。

We have limited budget let me know if you can do this competitively.

我们有限的预算让我知道如果你能做到这一点竞争力。

We don't know how other critters breathe--lizards, for example.

我们还不知道诸如蜥蜴之类的动物如何呼吸。