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In the article we at first discuss the kind of stock log-return distribution. We find that 7 kinds function can describe stock log-return form their works: Gausses of normal distribution, Levy distribution, t distribution, spike attitude distribution, random fluctuating model, ARCH-GARCH model, divide shape Brownian movement .

本文首先讨论了股票收益分布的种类，作者对前人的工作综合发现目前描述股票收益的函数大概有七种：高斯正态分布、利维稳定分布、t标度分布、尖峰态分布、随机波动率模型、ARCH—GARCH模型、分形布朗运动，我们分别对这七种函数进行了简要的介绍。

From the field situation, Shenzhen Area Xiangmihu mansion block on April 6 this year, the auction, starting price 7.65 billion, the hammer price was 9.5 billion yuan, the floor price 7442 yuan per square meter for Shenzhen in recent years, land prices the most.

从外地的情况，深圳地区块香蜜湖大厦4月6日，今年的拍卖，起拍价七十六点五〇亿，锤价为9.5亿元，底价七四四二元每平方米为深圳在最近几年，土地价格的多数的。

Optimised fuel consumption and emission levels are further achieved by the new 175/70 tyres, which provide less surface friction, and the 14 wheels with closed hubcaps, which generate less air resistance than open alloy wheels.

优化燃料消耗和废气排放水平，进一步实现新的七十零分之一百七十五轮胎，提供较少的表面摩擦力，以及14的封闭轮毂，它产生了非公开的合金轮毂空气阻力轮。

Seven inmates, led by convicted robber George Rivas, hatch an elaborate plan to escape from the Connally Unit prison in Texas, leading to one of the biggest manhunts in Texas history.

2000年12月13日，七名号称&德州七恶&的罪犯由他们天衣无缝的策划，从德州南部肯尼迪镇附近的州级最高保安监狱顺利脱身。13日凌晨，诡计多端的7恶便制服并监禁了9名平民维修组监工，4名监狱警察和3名狱友。

Udensis' genetic variation, its historical causes and dispersal, and references for the explanation of China's geological changes and post-Pleistocene geographical dispersal of plants.

由于七筋菇植物不同细胞型共存，两种细胞型的分布区相邻或重叠，为我们探讨七筋菇种群的遗传结构和遗传分化，多倍体的起源、扩散和演化，及其迁移路线提供了理想的天然研究场所。

Above is seven SEOs excellent turn of Mi book, not that you attained the extreme achievement to above 7, you can acquire and bestly search engine placings, you have to want a comprehensive and average use, can not have too many traces, this is a kind of capability, hope that the station-masters can bear in mind!

以上就是七条SEO优化的秘籍，并不是说你把以上七条做到了极致，你就能获得最好的搜索引擎排名，你必须要综合、平均的使用，并不能有太多的痕迹，这是一种功力，希望站长们可以谨记！

Ten years ago, Shirō was caught in a massive fire hazard that incinerated his parents and consumed a large portion of the city; as he was dying, an enigmatic man discovers and treats him.

他们是由圣杯选择的七位英灵，被分为七个职阶，以使魔的身份被召唤出来。能获得圣杯的只有一组，这7组人马为了成为最后的那一组而互相残杀。

Generally speaking, before the 1980s the focus of agriculturalists was on improving production and increasing the strains' ability to withstand heat and disease, whereas since the 1980s the emphasis has been on improving quality, to make the cooked rice as succulent, firm, and delicious as possible.

大致而言，民国七十年代前技术改良的重点在於提高产量、增加稻种的抗热病能力；七十年代后的目标则放在改进米的品质，让米饭更为香Q好吃。

Compagnie 111's French choreographer Aurelien Bory traveled all the way to Dalian, China to compose a visual tale in seven boards, a poem made from seven geometrical metaphors based on the tangram game.

舞团的法籍编舞家 Aurelien Bory 远赴中国的大连，目的是要在七块板上谱写一个视觉故事，一首以七巧板为基础，由七个几何学的比喻组成的诗歌。

The ninth day before the ides of a month; in the ancient Roman calendar, the seventh day of March, May, July, or October and the fifth day of the other months.

古罗马历中自三、五、七、十各月的十五日起算的前第九日即三、五、七、十各月的第七日；其它各月的第五日

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。