象...

The main contribution and valuable results of this dissertation can be listed as following:At the beginning, through analyzing the process of color image segmentation and comparing the results of "color image segmentation using fuzzy C-means and eigenspace projections" and "color image segmentation using histogram multithresholding and fusion",the advantages and drawbacks of these two methods are found.

本文研究的主要内容为：首先，对彩色图象分割过程进行分析，并对两种彩色图象分割算法即模糊c-均值和特征空间投影算法、直方图多阈值及融合算法的分割结果进行比较，从算法本身分析了其优缺点。

Apart from the late Cubist style, the only specially modern elements in Guernica are the Mithraic eye of the electric light, and the suggestion that the horse's body is made of parallel lines of newsprint like the newspaper in Picasso's collage a quarter of a century before.

除后立体主义风格以外，《格尔尼卡》中唯一特别现代的因素是这个象密特拉神的眼睛似的电灯，它表示这匹马的身躯以平行线构成，就象25年前毕加索所在的大学的报纸那样。

The rapid motion of the electros causes the sluggish nuclei to "see" the electron as a charge cloud, rather than as a discrete particle.

电子的快速运动使得缓动的核把电子"看成"象电核云，而不是象分立的粒子。

Ising regardless all the sweet and bitter experiences is still a joys and sorrows;Regardless is elephant a small grass the so"too frail to stand a gust of wind" ground is on the hoof, is still an elephant the sun the so"brilliant and glorious" ground is on the hoof, as long as we ability the "calm" ground accept own all morning and nights and order intravenous drop drop, experiencing own on the hoof life holily honestly, that is natural"the truth", is "meaning" of life!

无论是酸甜苦辣，还是悲欢离合；无论是象一根小草那样"弱不禁风"地活着，还是象太阳那样"灿烂辉煌"地活着，只要我们能"心平气和"地接纳自己所有的朝朝暮暮与点点滴滴，真诚地神圣地经历自己活着的生命，那就是自然的"真理"，就是人生的"意义"！

Their resulting decline in genetic variation can be deduced by comparing it to that of the southern elephant seal which were not so aggressively hunted.

将北象海豹与没有受到如此猛烈追捕的南海象豹作一个比较，可以推断出北象海豹因此而减少的遗传变异。

The proposal is not elephantine code can be carried out easily euqally, resemble map coordinate however same, need is skilled and consult content ability is understood.

建议不是象代码一样可以轻易执行，而是象地图坐标一样，需要有技能和参照物才能看懂。

For a monotone twist map the well-known Birkhoff fixed point theoremsays that the circles with rational rotation number will break up whence a finitenumber of pairs of periodic points arise,half of which are elliptic and the othershyperbolic.Moreover,around each elliptic periodic point a few of new invariantcurves will appear and make a picture of phase space with a self-similar structure.Again one may ask is there a similar picture for higher dimensional Hamiltoniansystems?

对于单调扭转映射，著名的Birkhoff不动点定理指出，在通有情况下旋转数为有理数的不变曲线一般会破裂，在原来的不变曲线附近会产生有限多对周期点，其中一半是双曲的，一半是椭圆的，而在椭圆型周期点的周围又会产生一圈圈的不变曲线，使得椭圆周期点附近的动力学行为和整个相空间的动力学行为十分相象，换句话说，整个相空间具有无限嵌套的自相似结构，自然又产生了一个问题：对于自由度数目大于2的高维哈密顿系统，其相空间是否有类似的图象？

"Once, this freakish, elvish cast came into the child's eyes, while Hester was looking at her own image in them, as mothers are fond of doing;"

一次，当海斯特象做母亲的喜欢做的那样，在孩子的眼睛中看着自己的影象时，珠儿的眼睛巾又出现了那种不可捉摸的精灵似的目光

The main research work of this paper are focused on following areas:(1) Based on review of the theory and methods on measurements of particle fields, a new idea for obtaining particle size and velocity distribution within a spray through imaging the particle field with a laser light sheet was put forward;(2) A DPIV (Digital Particle Image Velocimetry) system, is fit for velocity measurements of low speed flows, was developed and expended to particle size distribution measurement;(3) An arithmetic for particle velocity field reconstruction was developed, and the velocity distribution of water mist was also obtained;(4) A software system for particle analysis, which based on image geometry emend, de-noise and image partition was developed, the parameters such as particle size distribution, mean diameter, number of particles, minimum and maximum diameter can be got with this system;(5) A water mist system was developed and its characteristics, such as droplet velocity, size distribution, number of droplets and spray cone angle under different conditions were obtained from experiments with PIVS;(6) The measurement results of water mist characteristics with PIVS were compared and analyzed with the simply simulated results, and in addition, in order to verify the accuracy of PIVS, some experiments were conducted with the standard particles, such as glass-ball with known mean diameter of 50μm and 115μm, metallic coated tracing particle with mean diameter of 12μm;(7) Some experimental studies on interaction of water mist with liquid pool fires were conducted.

本论文的主要工作包括以下几个方面：（1）在对粒子场测量的相关理论和具体方法进行综述分析的基础上，提出了通过采用激光片光对粒子场进行成像以获取其粒径和速度等参数分布的新思路；（2）研制了适宜于低速流动速度场测量的DPIV(Digital Particle Image Velocimetry)系统，并使其实现了对粒子场粒径分布的测量功能；（3）研制了基于粒子运动轨迹的速度场重建算法，获取了细水雾雾场的速度分布；（4）研制了基于几何校正、去噪、图象分割等图象处理方法的"粒度分析软件系统"，该系统既可分析给出粒子场的粒径分布直方图和平均粒径，还可给出粒子的数目以及最大、最小粒径等信息；（5）建立了一细水雾发生系统，并应用上述方法对不同压力条件下细水雾系统的雾场特性（如速度分布、雾滴粒径分布、雾滴的数目、喷雾张角以及雾化长度等）进行了实验测量研究；（6）对细水雾特性参数的PIVS测量结果与计算机简单模拟计算结果进行了定性比较分析，并利用平均粒径为50μm和115μm的玻璃球以及12μm的标准示踪粒子对PIVS系统的粒径和速度测量结果进行了实验验证，同时对其局限性进行了分析讨论；（7）对不同工况条件下细水雾与油池火相互作用的过程进行了模拟实验研究。

An algorithm for estimating mean square error of the pixel position of scanned and thinned image is put forward in this paper.

该文提出了一种计算扫描图象细化后象点点位中误差的方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。