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The author gives two methods to specify the scale interval by using fitting of three—broken—line as well as statistical hypothesis testing based on the estimate of the derivative of the double logarithmic curve.

由于实际动力系统的混沌吸引子其自相似性只能在一定的尺度范围内存在，文中给出了两种无标度区间的确定方法以正确地估计吸引子的分形维数，即三折线拟合方法和通过直接估计双对数曲线上每一点的导数并利用统计假设检验方法确定合理的无标度区间。

The charm of the plateau goes far beyond the acclamations of the geoscientists; natural landscapes can also move ordinary people. The dozens of rows of glaciers at the foot of Xinqing Peak run several dozen kilometers long, with a thickness of over 30 meters, yet the volcanic hot springs still erupts from them, and the story of fire in the ice has been lasting for tens of thousands of years. The Wulao Peak flies upward in the splashing of the waterfalls running down from the glaciers several hundred meters high, the momentum surpassing any rock waterfalls we have heard of before.

高原的魅力远不止于地理学家口里的啧啧赞叹，许多自然胜景也同样会让我们寻常人感到震颤：新青峰脚下纵列数十道的冰川，长达几十公里，厚过30米，却仍然不能熄灭从中喷射而出的火山沸泉，冰火浴生的故事在那里上映了数万年；五老峰则从高达百米的冰川里下泻的瀑布水沫中飞扬，其气势和声涛胜过我们熟知的任何岩石瀑布。

In this paper, the direct simulation Monte Carlo method is employed to simulate flows of modeled air vehicles having simple geometric shape such as delta wing at a Knudsen number between 0.001 and 0.1 for various Mach number and angle of attack conditions. With the calculated aerodynamic forces and heating, we obtained the general behavior of the rarefied gas effects on the vehicles' aerodynamics.

本文采用直接模拟 Monte Carlo 方法，模拟了简单外型如三角翼形的模型飞行器在努森数为 0.001到 0.1的范围内以不同来流马赫数和不同飞行攻角飞行时的流场，计算了飞行器所受到的气动力和气动热，获得了稀薄气体效应对飞行器气动性能影响的一般规律。

In virtue of Fluent of CFD software, we carry though computation of aerodynamics of an air-to-air missile in different Mach meter and different attack angle and gained movement trend of lift coefficient、drag coefficient and pitching moment coefficient with variety of Mach number and attack angle, meanwhile, we also obtain distributing trend of pressure, temperature and weather velocity.

借助于商业CFD软件FLUENT，对某型空空导弹在不同攻角、不同飞行马赫数的气动力进行了计算，得出了该型导弹升力系数、阻力系数和俯仰力矩系数随飞行马赫数和攻角的变化规律以及导弹表面的压力分布、温度分布和来流速度分布。

The commercial CFD software Fluent was used for simalation of aerodynamic charactirestics of some terminal guided munitions in terminal segment under different affack anyle and mach, the variation lav of or lift coeflienct, drag coeflient and roll moment coefficient with flight mach and attacls angle was obtained, The semulation result shows the caculated aerodynarve parameters can be referend to high accuracy firing table for the terminal guided projectile.

文中主要利用商业CFD软件Fluent对某型末制导炮弹的末制导段在不同攻角、不同飞行马赫数的气动特性进行了数值仿真，得出了该型末制导炮弹升力系数、阻力系数和滚转力矩系数随飞行马赫数和攻角的变化规律。结果表明，计算所得气动参数可以为该末制导炮弹编制高精度射表提供数据依据和参考。

In this paper we introduce a search algorithm of computer, and the arithmetic can get a magic square of squares with high rank in a short time.

本文提供了一种计算机搜索算法，该算法能够在比较短的时间内获得阶数较大的平方数幻方。

What we have stated with reference to the number of slaves which can be manumitted by will should be understood to mean that where a man has a right to liberate the half, the third, the fourth, or the fifth part of his entire body of slaves, he shall in no case be restricted to a smaller number than he would have been permitted to manumit had the estimate been made according to the next preceding scale.

对于我们在介绍通过遗嘱解放奴隶的数额时所谈到的规则，应当作这样的理解：对于那些可以解放其中一半、三分之一、四分之一或者五分之一的奴隶数来说，决不应解放少于前一个限额数的奴隶。

Pisier\'s results,under tree martingale valued space X is isomorphic toan a-uniformly convex space (2≤a＜∞),some quasi-normal or normal inequalitiesof a-variation maximal operator and a-conditional variation maximal operator of X-valued predictable tree martingales are identified.

同时，用G.Pisier's结果在树鞅取值空间X同构于a一致凸Banach空间条件下，证明了几个X-值树鞅α-方极大算子和a-条件方极大算子的拟范数不等式与范数不等式。

Necessary and sufficient conditions are given when n=m+1. Finally, we show that when n=m+1, all systems but a measure zero set are linearizable.

对输入数仅比系统维数少一的情况给出了充要条件，并证明了在此情况下几乎所有的系统均可线性化。

The unit of 1000t/a methylal synthesis by fluidized catalytic distillation was designed according to the results of equilibrium stage simulation, together with the consideration of the existence of plate efficiency and utilization ratio of catalyst.

在模拟过程中，探讨了塔板数、空时、回流比等对催化精馏效果的影响，分析了各因素对催化精馏的耦合影响关系，得到了较适宜的理论塔板数、空时和回流比，为本体系的工业性试验用催化精馏塔设计提供了依据。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐