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As a variant of differential cryptanalysis, impossible differential cryptanalysis is a simple and effective technique, and it is also one of the most frequently used cryptanalytic methods.

不可能差分分析作为差分分析的一种变体，是一种简单有效的密码分析方法，也是目前最常用的密码分析方法之一。

The integrability conditions and coefficient conditions for the appearance of 5 and 6 limit cycles from the neighborhood of the equator are obtained. An example of cubic system with 6 limit cycles bifurcating from the equator is given for the first time.

同时计算出系统的前6个赤道环量，得到了系统在赤道邻域的可积性条件及在赤道附近分支出5个和6个极限环的系数条件，从而首次给出了一个平面三次系统在赤道附近分支出6个极限环的计算实例。

To solve the accuracy and the recognizing effect problems for fingerprint matching in the progress of fingerprint recognition, and considering the triangulation of cupidity algorithm in computational geometry and leading it into the fingerprint matching, a method for fingerprint matching which based on trigonometric grid is proposed.

针对指纹识别过程中的指纹匹配算法的准确性以及识别效果等问题，结合计算几何中平面点集的三角剖分方法－贪心算法的特点，将其引入指纹匹配处理，提出了一种基于三角网格（用贪心算法进行平面点集的三角剖分）的指纹匹配方法。

First a hierarchically structured genotype is applied to represent cycloid parameters, and selection and mutation operators with evolutionary art are used to generate diverse patterns. Those with higher user rating are stored into the pattern database. Then fractal theory is introduced to configure these patterns on the basis of two distinct methods-Pythagoras tree design and Curlicue Fractal design.

采用层次结构化基因型表示摆线参数，使用进化艺术思想进行选择、变异操作，生成造型各异的花形图案，将用户评分较高的图案存入图案数据库；引入分形理论将图案库中的元件进行组装，提出基于Pythagoras树和花体分形原理的2套组装方案。

The results are as follows: the dwarf mutant A846 pertain to half-dwarf type, which height is about 38.64 cm on average, preponderating over the half-height of the wild-type, the elongation stage of the mutant represent dwarf character, internode elongation patterns of caulis are similarly the sh-type dwarf mutant, in which the first internode shows specific reduction, the elongation of these cells in the elongation zone immediately above the IM was dissimilar to the wild-type, longitudinal length of parenchyma cells were curtate, also the first internode exhibit markedly, which average is under the corresponding internode of the wild-type, the differentiation of the IM of each internodes of stem was similar to wild-type, as well as the number of internodes and the length of sheath of flag leaf.

结果表明：突变体A846平均株高38.64cm，大于野生型株高的一半，为半矮秆类型；其矮生性在拔节期显著表现；主茎茎秆各节间收缩比例不一，穗下第一节间显著缩短，与sh-型突变体类似；茎秆各节间居间分生组织细胞分化正常，由居间分生组织分化的细胞延伸受到不同程度的阻碍；各节间基本组织细胞纵向长度相应缩短，穗下第一节间缩短比例最大，其平均值小于野生型的一半；主茎节间数目与旗叶的叶鞘长类似于野生型。

The algorithm is practicable and efficient in finding approximate roots of a cyclotomic polynomial, and gives a new method to judge a polynomial that can pitch cirle.

该算法在求分圆多项式的近似根方面是可行的，并取得比较好的效果，为判定一个多项式是否分圆提供了一种新方法。

Victory on Sunday will have double value, Deco said in the Daily Star.

"这可不止3分，周末的胜利价值6分"德科说。

Objective To investigate the clinical features, causes of blindness and diagnosis of Vogt Koyanagi Harada syndrome Methods The data of 157 patients with VKH syndrome were reviewed and analyzed Patients were carefully examined with slit lamp, ophthalmoscope, three mirror lens, fundus fluorescein angiography, indocyanine green angiography and HLA typing Results Headache was noted in 73 5% of these patients Simultaneous involvement of both eyes occurred in 80 8% of these patients Chroiditis,papilledema and edema of the retina adjacent to the optic nerve were noted in 100% of these patients in the posterior uveitis stage, whereas recurrent granulomatous anterior uveitis (98 4%),"sunset glow" fundus (95 8%) and Dalen Fuchs nodules (71 2%) were the common ocular findings in the recurrent anterior uveitis stage The common causes of blindness were papillitis, exudative retinal detachment and complicated cataract in the posterior uveitis stage, anterior uveal involvement stage and its recurrent stage Poliosis (36 3%) and alopecia (35 0%) were the most common extraocular findings Early irregular patches of fluorescence, followed by localized hyperfluorescent spots were the typical findings of FFA Dilation of choroidal vessels and leakage of ICG from the choroidal vessels were the common ICGA findings The prevalence of HLA DR4 and HLA DRw53 in patients (54 9% and 71 8% respectively) was significantly higher than that in controls (14 7% and 38 2% respectively) Conclusions VKH syndrome is characterized by chroiditis, papillitis or neuroretinitis in the posterior uveitis stage, followed by a generalized uveitis with a typical recurrent granulomatous anterior uveitis Extraocular findings and relevant examinations including FFA, ICGA and HLA typing are helpful to the diagnosis of VKH syndrome

目的探讨Vogt-Koyanagi-Harada综合征患者的临床特征、盲目原因及诊断等有关问题。方法对在1996年1月至2000年12月间就诊资料完整的157例VKH综合征患者进行回顾性分析，并对裂隙灯、眼底镜、三面镜、荧光素眼底血管造影(fundus fluorescein angiography，FFA)、吲哚青绿血管造影(indocyanine green angiography，ICGA)及人类白细胞抗原分型等检查结果进行分析。结果 VKH综合征最常见的前驱症状为头痛(102例，73.5%)，双眼同时患病118例(80.8%)；后葡萄膜炎期眼部主要表现为脉络膜炎、视乳头及附近视网膜水肿(100.0%)；前葡萄膜炎反复发作期眼部表现为复发性肉芽肿性前葡萄膜炎(128例，98.4%)、晚霞状眼底改变(95.8%)及Dalen-Fuchs结节(71.2%)；后葡萄膜炎期、前葡萄膜受累期及前葡萄膜炎反复发作期导致盲目的主要原因分别为视乳头炎、视网膜脱离及并发性白内障；毛发变白(36.3%)及脱发(35.0%)是最常见的眼外表现；炎症活动期FFA典型表现为斑驳状高荧光，ICGA发现脉络膜血管扩张、通透性增高等改变；VKH综合征患者HLA-DR4及HLA-DRw53的阳性率(54.9%及71.8%)显著高于正常对照组(14.7%及38.2%)。结论 VKH综合征患者在后葡萄膜炎期眼部典型表现为双侧脉络膜炎、视乳头炎或神经视网膜炎，随后出现以反复发作的肉芽肿性前葡萄膜炎为特征的全葡萄膜炎。眼外症状及相关的辅助检查包括FFA、ICGA 及HLA分型等有助于VKH综合征的诊断。

According to Dalton's law of partial pressures,the principle of experiment "Determination of the ideal gas constant R ",the volume and pressure of hydrogen produced in the experiment were analyzed and discussed.

从道尔顿分压定律出发，对教学实验"理想气体常数R 的测定"中产生的氢气的体积、分压和该实验的原理进行了详细的分析和讨论。

Inverted surcharge of "temporarily used for" 2c on 3c junk 1st peking print, used on piece, tied by shanghai dater on sep 24, 1924, this stamp has the same position from the setting as that listed on p.270 of "prize selections爁rom the rocpex taipei'81", only about 20 pieces believed to exist, well-known as one of the "four rarities of republic of china", from overseas collector, extremely precious, vf rmb:

贴北京一版帆船加盖"暂作"改值邮票2分/3分倒盖变体剪片，销上海1924年9月24日戳，颜色鲜艳，齿孔完整，此票与台湾《邮展选萃》270页图为同一位置版式，存世仅二十枚左右，为"民国四珍"之一，此票源自海外藏家，首次在中国大陆拍卖会上出现，极少见，上品

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。