查询词典 research

Data mining is the procedure to get novel, interesting and potentially useful information from large database, which can help us to acquire knowledge and rules. It is a brand-new subject and research direction which is widely used in financial, retail trade, telegraphic communication and research on structure of the genic sequence.

数据挖掘是从大量数据中提取人们感兴趣的、事先未知的、潜在的有用信息，而挖掘出某种知识和规则的过程，它是一个全新的学科和研究方向，在金融业、零售业、电信业以及基因序列组成研究等领域获得了广泛的应用。

From the point of view of geobotany, with the method of correlative factors of growth of plants, a countrywide theoretic ecological division was done for the introduction of Camptotheca acuminata and three kinds of areas of ecological preferent zone, ecological adaptive zone and ecological unadaptable zone were divided. With the theory of synecology, the characteristic on environment, constitution, life form spectrum, diversity, similarity of plots of communities were researched. Applying the method of species association, discrete distribution, indensity index, fractal geometry, etc. to research relations between the species of the communities, space distribution of Camptotheca acuminata, structure of age of Camptotheca acuminata, in different communities. Using the theories of autoecology, distibutons of seeds on land and growth of seedlings in vertical and horizontal directions, biomass of organ of Camptotheca acuminata were analyzed. On the opinions of conservation biology, the external and internal factors impressing Camptotheca acuminata were analyzed to research the mechanism of the endangered species, and with using of CTM Model, the future development direction of Camptotheca acuminata in different communities were forecasted, and. Standing on the position of resources ecology, discussing the regularity of camptothein in Camptotheca acuminata of different sites and seeding of different resources, also the the derive technics of camptothecin.

本文从地植物学的角度，运用植物生长相关因子法，对我国喜树资源的生态适宜区进行了划分，理论上确定了我国的喜树的引种栽培的最适生活区域、生态适宜区域和不适宜生活区域；从群落生态学的角度，对野生喜树所在的典型群落的群落环境、群落组成、群落生活型谱、群落的物种多样性特点、群落样地间相似性进行了研究；从种群生态学的角度，运用种间联结性、离散分布模型、聚集强度指数、分析几何等分析手段，对野生喜树所在典型群落间的种间关系、喜树的空间分布格局、年龄结构等进行了分析；从个体生态学的角度，对不同年龄组的喜树的种子的散落的垂直分布、水平分布、时间分布及种子发芽率和千里重等特点、不同种源的人工喜树苗期特点、喜树的高生长和茎生长特点、喜树的器官生物量特点进行了研究；从保护生物学的角度，对野生喜树的濒危的内部因素和外部因素进行了探讨，并运用CTM模型对不同群落中野生喜树的种群趋势进行了预测；从资源生态学的角度，对我国地理环境下喜树中喜树碱含量的地理分布规律、不同种源的喜树幼苗中喜树碱含量变化规律进行了研究，并对喜树碱的提取工艺进行了探讨。

In 3D geodynamics numerical simulation research, it is often required to mesh the whole Earth or part of the spherical shell, and the size of mesh is much more important to our research.

在研究大尺度的三维地球动力学问题的数值模拟过程中，往往需要对整个球体或部分球壳生成计算网格，而且网格单元的尺寸对所研究的问题尤为重要。

The essay is about the teaching research into the relations between the definition geometrize nature and circular cone , in which the teaching research of definition mainly uncovers the nature of circular cone;geometry nature about how to lead the students to understand the geometry nature of circular cone with equations in the thought of figures and shape.

其中定义的教学探究主要是揭示圆锥曲线的本质特征，几何性质的教学探究主要引导学生从方程的角度，用数形结合的思想去理解圆锥曲线的几何性质。

The success of this research would induce more important effect that mangrove resource in Hainan is as germ plasm resource bank and begin a new way for the research and application of salt tolerance of plant.

项目的成功，使海南丰富的红树林资源发挥出重要的种质资源库作用，为植物耐盐性的研究和应用开辟了一条新的道路。

Glaciologist Richard Alley of The Pennsylvania State University, who was not involved in the research, calls the findings "solid" and "careful," and notes that this research confirms that ice-sheet changes can happen quickly.

宾夕法尼亚州立大学的冰川学家理查德·阿利没有参与这项研究，但他声称这些发现是"可靠而细致的"，并指出这项研究进一步证实了冰盖可能会发生快速的变化。

Laura Guay is vice president of research at the Elizabeth Glaser Pediatric AIDS Foundation, which supported the research.

劳拉。盖伊是为这两项研究提供赞助的伊丽莎白格拉泽儿童艾滋病基金会的副总裁。

Laura Guay is vice president of researcher research at the Elizabeth Glaser Pediatric AIDS Foundation, which supported the research.

Laura Guay是在伊丽莎白格拉泽小儿科艾滋病基金会研究的副校长，他支持该项研究。

Founded in 9 years, my company all the scientific research personnel and make unremitting efforts and continuous research of technology, in 2003, successfully developed a fully applicable to the thermal self-adhesive at the end of Glassine paper, this is my company to stabilize the fire source, but also actively explore the domestic market, all the year round for the Beijing, Shanghai, Guangzhou, Wenzhou, Dalian, Henan, Shandong, Xinjiang, Inner Mongolia and other regions of many enterprises to provide quality, stable source of paper, and by the manufacturers and customers all over the acclaim.

在公司成立9年时间里，我公司全体科研人员经过不懈的努力和对技术的不断钻研，于2003年成功研制出完全适用于热敏不干胶的格拉辛底纸，这样就是我公司稳定了火源，同时还积极开拓了国内市场，常年为北京、上海、广州、温州、大连、河南、山东、新疆、内蒙古等地区的众多企业提供优质、稳定的纸源，并受到了各地厂商及客户的好评。

The first part is preface, on the basis of expounding the background, the purpose, the meaning and the thinking of the thesis study, briefly introduce the research achievements of domestic and international urban spatial structure; the second part is summary, expatiate on the connotation, component, research span and space type of urban spatial structure; The third part is theory foundation, mainly introduce the three classical models of city spatial structure in the west country (concentric circles mode, fan-shaped mode and multi-core mode) and the relative city development theories (growth pole theory, dot-axis theory, core-fringe theory, metropolis circle theory and city space evolution theory); The fourth part is general situations of study region; The fifth part is the analysis of Lanzhou city spatial structure evolution, along the historical venation Of city development, on the basis of analyzing industrial structure change, focus on and sumup the characteristics of spatial development and form, meanwhile, analyze factors which influences the spatial development; The sixth part is the analysis of Lanzhou city spatial development trend, put forward the development models of Lanzhou city spatial structure from three space aspects(the core city, the city, region) in the future, they are group gobbet structure, fingers structure, circle structure; The seventh part is to mainly put forward the development strategies for the different spatial structure models.

第一部分为前言，在阐明论文研究背景、目的及意义、思路的基础上，简要介绍了国内外城市空间结构相关研究成果；第二部分为概述，对城市空间结构的内涵、组成要素、研究尺度及其空间类型作以介绍；第三部分为理论基础，主要是对西方城市空间结构的3大经典模型(同心圆模式、扇形模式和多核心模式)以及与本研究相关的城市空间发展理论(增长极理论、点轴理论、核心——边缘理论、都市圈理论和城市空间演化理论)的介绍；第四部分为研究区概况，主要是对研究区域范围的界定及其社会经济发展概况介绍；第五部分是兰州城市空间结构演化分析，顺着兰州城市发展的历史脉络，在分析产业结构变动的基础上，着重对城市空间发展及其形态特征进行归纳总结，并分析了空间发展的主要影响因素；第六部分是兰州城市空间发展趋势分析，从中心城市、市域、区域3个空间层面上提出未来兰州城市空间结构的不同模式，即组团结构、指状结构、圈层结构；第七部分是城市空间发展策略，针对不同的城市空间发展模式提出一些对策建议。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"