是...的特点

Therefore, the purpose of this topic research is to set out from the sociological angle, carry on a creatively thorough research on the formation and development of this block in ancient times,specifically including its characteristics and the reasons for their formation, and the relationship between it and Fujian culture especially Fuzhou cultrue;and to firstly answer the question why there were so many famous people living in this block, thoroughly analyze the ultimate motivity that push its development in ancient times even its great achievement in modern times;so as to fill in the blank of this academic research,and to make people's know about this block more thoroughly and completely,and then realize that the great achievement that it had achieved in morden times was not a historical fortuity,but deeply relied on the base of historical culture.

因此，本课题研究的目的在于从社会学的角度出发，对古代三坊七巷的形成和发展进行深入的研究，具体包括它的特点、特点的形成原因，与福建文化特别是与福州文化的关系进行了首创性的研究，初步回答了古代三坊七巷名人辈出的原因，深入分析了推动古代三坊七巷不断发展直至近代取得辉煌成就的深层动力因素，从而弥补了国内此项学术研究的空白，使人们对古代三坊七巷的了解更加系统、深入，认识到它在近代的辉煌不是历史的偶然，而是有着深厚的历史文化底蕴作依托。

Therefore, the purpose of this topic research is to set out from the sociological angle, carry on a creatively thorough research on the formation and development of this block in ancient times,specifically including its characteristics and the reasons for their formation, and the relationship between it and Fujian culture especially Fuzhou cultrue;and to firstly answer the question why there were so many famous people living in this block, thoroughly analyze the ultimate motivity that push its development in ancient times even its great achievement in modern times;so as to fill in the blank of this academic research,and to make peoples know about this block more thoroughly and completely,and then realize that the great achievement that it had achieved in morden times was not a historical fortuity,but deeply relied on the base of historical culture.

因此，本课题研究的目的在于从社会学的角度出发，对古代三坊七巷的形成和发展进行深入的研究，具体包括它的特点、特点的形成原因，与福建文化特别是与福州文化的关系进行了首创性的研究，初步回答了古代三坊七巷名人辈出的原因，深入分析了推动古代三坊七巷不断发展直至近代取得辉煌成就的深层动力因素，从而弥补了国内此项学术研究的空白，使人们对古代三坊七巷的了解更加系统、深入，认识到它在近代的辉煌不是历史的偶然，而是有着深厚的历史文化底蕴作依托。

In this paper, tolerance analysis mainly relates to three methods, viz."Extremum Method","Statistics Method" and "method of Monte Carlo". The character of the "Extremum Method" is to calculate the limit dimension of the close loop according to every limit dimension of the composing loop in order to ensure an entire frogging character, and get the tolerance of close loop.

极值法"的特点从保证完全互换着眼，由各组成环的极限值计算出封闭环的极限尺寸，从而求得封闭环公差；"统计法的特点是从保证大数互换着眼，根据各组成环的实际尺寸在其公差带内的分布情况，按某一置信概率求得封闭环尺寸实际分布范围，由此决定封闭环公差。

Firstly, This paper processes geometry filtration based on character of orbit's apogee and perigee after orbit model is analyzed and based. Secondly Space Debris is separated into two kinds, coplanar and not coplanar according as location interrelation of target and debris. In Dynamic filtration's processing, considering prediction time limit and orbit perturbation, secular effects which have increaser effect is considered so that some need catching danger time point is appeased, some law about time when target and debris pass intersectant line each other is inferred, when debris and object are in different plane and some similar law also is inferred otherwise. The time list is arithmetical progression. These laws can improve calculation efficiency remarkably; Lastly orbit predict is a course approaching least distance. Danger time point in the last step become beginning time point from which debris and object's position and velocity are calculated by SXP4 Model which is an analytic model.By result, determine that relative movement trend is closer or apart, farther calculate the interval apart from time when predictive least relative distance occurs. Least relative distance and time when least distance occurs is calculated finally. It is a fast approach course adopting varied interval.

本文在分析、建立轨道摄动计算模型的基础上，首先采用基于轨道远、近地点特征对大量编目在册的空间碎片进行初步几何静态筛选，然后根据碎片与目标轨道面的相对位置特点把碎片分为异面与准共面两种情况以进行动态筛选，在筛选过程中考虑到预报时限长度和轨道摄动影响，引入了轨道摄动中具有积累效应的长期项以满足危险时间点的捕捉要求，利用了长期项摄动变化线性的特点导出了碎片与目标异面情况下各自过交线的时间序列成准等差数列的规律性和准共面情况下类似的规律性，从而显著地提高了前期轨道筛选的计算效率；最后对剩余危险碎片和目标飞行器利用SXP4轨道预报模型在前期轨道筛选的基础上以各个危险探测时间点为预报的时间起点，并根据预报计算结果，分析目标和碎片在该时间点的运动趋势是相互远离还是相互接近，推出预计最小相对距离发生时刻相对此刻的时间长度，得到其随时间变化的局部最小相对距离以及危险距离发生的时刻和相对速度，这是一个采用变时间步长、快速逼近最小相对距离的过程。

The results show that Phenological season in Minqin oasis can be divided into 4 major stages, and 12 sub-stages,winter long and autumn short, spring and summer mediacy in 4 major stages of spring, summer, autumn and winter,each season stage not only had obviously indicative Phenological phenomenaandtypical form combination of phenologicalphenomena, but also had unique seasonal aspects.

了解一个地区季节演变的特点和季节节奏变化的规律，对掌握一定地域内生物第一性生产力的高低和风景旅游资源的时序变化特点，合理组织和安排农、林、牧业生产活动，以及社会精神文化生活具有十分重要的意义。对季节的划分，目前比较流行的是以物候指标划分季节。

Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows:①reviewed entirely the origin and evolvement of the concept "sustainable development", stated and commented the study status in queue on"sustainable development"around national and international range, thorough discussed the science connotation about the concept "sustainable development";②looked back and commented across-the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings;③expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory;④thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the MATLAB software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the B-J method and Morte-Carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources;⑤synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming, mathematical statistics, random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality;⑥analyzed the inside condition and outside condition to assure the sustainable and optimum exploitation of groundwater resources, the inside conditions are the follows: correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows: the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water-saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology;⑦scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy;⑧point out the more directions on groundwater resources.

它将为制定水资源的可持续发展目标和战略决策提供科学依据，为制定社会、经济可持续发展战略提供理论基础。基于以上考虑，论文主要从以下几方面对地下水资源可持续开发问题进行了比较深入的探讨：①全面回顾了"可持续发展"概念的由来与演变，对国内外"可持续发展"的研究现状进行了述评，并对"可持续发展"概念的科学内涵进行了深入探讨；②对涉及地下水资源的一些最基本的概念和命题进行了全面的回顾和评述，对目前仍然存在的一些错误观点和混乱认识提出了自己的见解；③全面阐述了地下水资源变值系统理论的内容和意义，并与传统的地下水资源计算评价方法进行了对比分析，结合实例具体说明了方法的应用；④深入分析了地下水资源预测预报工作的极端重要性和复杂性，对传统的地下水资源动态预测方法进行了全面的评述，指出了各类预测预报方法的特点及适用条件，对最近二十多年刚发展起来的小波分析技术的主要思想和方法及其应用范围，以及号称第五代计算机语言的MATLAB软件和附带的小波分析工具箱进行了介绍，并应用于地下水动态过程线的分析，采用时间序列中的B-J法，蒙特卡罗方法，与地下水资源变值系统理论相结合，探讨了地下水动态资料分析和地下水资源预测预报的新思路；⑤综合分析了现今各类地下水管理模型的特点及缺陷，将数学规划、数理统计、随机过程等与地下水变值系统理论相结合进行地表水地下水或多水源的联合优化调度，使模型更准确、更实用；⑥对保证地下水资源可持续开发的内部条件和外部条件进行了分析，内部条件主要是正确的资源观，科学的资源计算与评价方法，可靠的资源预测预报技术，可操作的资源管理措施，外部条件主要是高层发展思路、管理体制的变革、配套的政策法规、经济杠杆的调节、人文素质的提高、节水意识的增强及具体节水措施、人口增长的控制、水体污染的防治、生态的恢复和重建等；⑦从宇宙科学、地球系统科学及哲学的高度审视地下水资源的可持续开发；⑧指出了地下水资源可持续开发的进一步研究方向。

The dissertation has made a careful analysis of the features and functions of such components of the rhetorical question as adverb, modal verb, interrogative pronoun and other special ones. A special attention is given to modal verb and interrogative pronoun in the rhetorical question.

为了做到分析的全面性，本文分析了反问句各种成分的特点和作用，包括构成反问句的结构成分、凸显反诘语气的结构成分，涉及到副词、情态动词、疑问代词以及反问句中出现的特殊语用成分，特别是对情态动词和疑问代词在反问句中的特点进行了比较详细的描写和比较。

Closely related to humour is self-effacement We tend to think this is a more winning quality than it actually is.

与我们的幽默的特点更紧密相关的另一个特点是我们的自主的礼让观念。

The structure of hardware and software for the SIEMENS MM serial inverter which are linked to the network and its application in the fieldbus are analyzed . The TOP architecture of the system ,the establishment of master and slave station and access to GSD document of inverter are describled in detail.

PROFIBUS现场总线是工业自动化控制领域最流行的控制技术之一，针对该总线的工作原理和特点，本文介绍了PROFIBUS—DP的特点，探讨了SIEMENS MM系列变频器连入PROFIBUS—DP的硬件和软件结构及在该系统中的应用情况。

Characteristics of the development of commodity economy in the feudal Chinese society have remained an important issuein the study of commodity economy history.,the explora-tion of the characteristics of the development of the commodi-ty economy in the feudal Chinese society must first depend on a complete description of the situation of its own rather thanjust a simple comparison between the feudal Chinese landlord system and the Western European suzerain system.

封建商品的特点是商品经济史中一个首要的重大。对这个问题的认识应以对其本身的研究为基础，而不能将中国的封建地主制与西欧的封建领主制作简单对比。中国封建社会商品经济的特殊性主要表现在：它的发展经历了三个高峰，并形成了多层次和多元化发展封建商品的特点是商品经济史中一个首要的重大。对这个问题的认识应以对其本身的研究为基础，而不能将中国的封建地主制与西欧的封建领主制作简单对比。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。