飞走

This problem is also important and valuable in Nonlinear Optics. It will be very helpful to understand how the aberrations affect the course of three- wave mixing, such as the change of conversion efficiency, the distribution of intensity and phase.Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental waves aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解；通过建立国防科学技术人学研究生院学位论文三维数值模型，编写相应仿真程序，首次得到了位相畸变光束倍频过程的大量计算结果，深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素；得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同，但谐波的远场发散角明显地比相应基波的小的结论；得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下，位相畸变传递到二次谐波的估算式；举例分析了KDP三倍频方案中，基波位相畸变对二次谐波和三次谐波的影响；实验工作中，用哈特曼一夏克传感器分别对IO64nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量，给出了相应结果。

Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental wave's aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解；通过建立三维数值模型，编写相应仿真程序，首次得到了位相畸变光束倍频过程的大量计算结果，深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素；得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同，但谐波的远场发散角明显地比相应基波的小的结论；得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下，位相畸变传递到二次谐波的估算式；举例分析了KDP三倍频方案中，基波位相畸变对二次谐波和三次谐波的影响；实验工作中，用哈特曼-夏克传感器分别对1064nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量，给出了相应结果。

Lijiang azaleas up to 57 kinds of species, have 56 kinds of mammals go, 290 kinds of birds fly.

丽江的杜鹃花品种高达57种，走兽类有56种，飞禽类290种。

A Bludger hit Harry squarely in the small of the back and he flew forwards off his broom.

一个游走球正中哈利的后腰，他从扫帚上飞了出去。

The Bludgers are up,followed by the Golden Snitch.

游走球飞起来了，紧跟着的是金色飞贼。

It buzzes in Bertha's ear, flies up her nose, walks on her pie and dive-bombs her cake.

它的嗡嗡叫声传到了Bertha的耳朵里，飞到了她鼻子上，走在她的派上面，钻在蛋糕里。

And when hte fowls came down upon the carcases, Abram drove them away.

有鸷鸟飞下，落在那死畜的肉上，亚伯蓝把它吓走了。

Our company has advanced combing and mule machines production line from Japanese Kyowa Company, automatic doffers and twisters from Mulata Company, electric yarn cleaners from Switzerland, Feifu knitting machines and computer designing systerm from Taiwan, Stoll automatic computer flat machines and other advanced equipments.

我公司拥有世界先进的日本京和公司的梳毛机、走锭机生产线，村田公司的全自动空气无接头落筒机、捻线机，瑞士乌斯特电子清纱器，台湾的飞虎编织机、缝盘机、电脑设计系统，德国的斯托尔全自动电脑横机及其他具有散毛、绞纱、成衣等全套染色设备。

You can be waylaid by the unexpected baboon sitting atop a fence post by the side of the road, by the odd shovel-mouthed lizard, or by the huge haystacklike homes of sociable weaver birds.

当你走在路上会有很多动物跟你打招呼，像坐在路边栅栏上的狒狒、古怪的扁嘴蜥蜴或者是巨大的干草堆一样的房子里飞出来的友善的织巢鸟。

Both has delicious, and has amusingly, I listened to the heart in side also to fly Heihe forest park.passes through the nearly 3 hours the distances, we arrived at the destination, really looked like uncles saying that here tourist was scarce, on the mountain verdant all was the tree, but also had the spring which left from the mountain upper reaches, air fresh extremely.has had the lunch, I aunts am being suitable the stream bank with uncle toward Shan Lizou.

既有好吃的，又有好玩的，我在旁边听着心也飞到了黑河森林公园。经过近 3个小时的路程，我们到达了目的地，果然象叔叔们说的，这里的游客稀少，山上绿葱葱的全是树，还有从山上流出的清泉，空气清新极了。吃过午饭，我跟着叔叔阿姨们顺着河堤往山里走。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了