大轴

Fiber with large core diameter (greater than 10 micrometers) may be analyzed by geometric optics.

更简单地说，有一个最大角从纤维轴在轻可进入纤维，从而使它宣传，或旅行，在核心的纤维。

1Based on the characteristics of carbonatite reservoir in Sangtamu area, we summarize the type of seismic reflection and the distribution of oil and gas.(2)Through the study of the lateral difference of local amplitude, which can predict the short, unorderly reflective energy gobbet of carbonatite reservior, we study the distribution of carbonatite reservoir with crack.(3)Analyzing the change of the seismic waveform, applying nerve network method to classify the seismic waveform, find the rule of its change, recognizing the change rule of seismic facies.(4)Applying the seismic multi-attribute cross method to study the surface and inner of carbonatite reservoir in buried hill. We first extract the 5 kinds of seismic attribute. Through a series of choices, we find those seismic attributes that are sensitive to the change of carbonatite reservoir.

主要的研究包括：①根据桑塔木碳酸盐岩的储层特点，总结了该区的地震反射特征及油气分布特征；②研究出一种有针对性的地震属性--局域振幅横向差异性，来定量刻画潜山内部"短轴"杂乱反射能量团，预测缝洞型碳酸盐岩内部储层的平面分布规律；③通过对地震波形变化的分析，运用神经网络对地震波形进行有效分类，找出波形变化的总体规律，从而认识地震相的变化规律；④应用交会法地震多属性分析方法，对潜山表层和内部分别提取了5大类40种地震属性，通过一系列分析表层及内幕各自优选出3种、4种地震属性用于进行交会分析。

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。

Objective: To observe the ultrastructural changes of the gonad axises in D-gal-induced aging rats.

目的：观察D-半乳糖衰老大鼠性腺轴系超微结构的变化。

The result shows that the relationship between stress and strain can be described by Hardin model.

试验结果表明：该尾矿砂的动应力应变关系可用Hardin等效黏弹性模型描述，模型中的起始动剪切模量和最大动剪应力皆随固结应力比和有效固结围压的增大而增大，这两个参数与有效固结轴压成幂函数关系，且其受固结应力的影响较小。

It is found that the tracking speed of spinning axis of a latitude-orientated type of heliostat varies drastically during solar noon around days of equinox.

我们发现在靠近春分、秋分的那些日期的太阳时正午，latitude-orientated的定日镜自旋轴的跟踪速度变化很大。

The significance and the expression changes of slit-2 during the spinal cord injury of rats Objective: To investigate the ethology, morphology and the expression of axon guidance cue slit-2 mRNA changes in different phases of spinal cord hemisection injury, and to explore the effect of slit-2 in axon regeneration of the mammalian central nervous system injury.

目的：观察大鼠脊髓损伤后行为学及形态学的变化特点，同时研究轴突导向因子slit-2的表达变化及意义，进一步探讨slit-2在成年哺乳动物脊髓损伤修复和神经再生中的作用，为临床研究神经系统疾病及其治疗提供新的思路和理论指导。

Objective To investigate the effects of transplanted olfactory ensheathing cellsand L-NNA on neuronal survival and axonal regeneration in Clarke's Nucleus after spinal cord hemisection of rats.

目的 探讨嗅鞘细胞移植和一氧化氮合酶抑制剂左旋硝基精氨酸对大鼠脊髓损伤后背核神经元存活及其轴突再生的影响。

Numerical simulation of cavitation in axial-flow pump under large-flow condition has been conducted by calculation Eulerian-Eulerian homogeneous model and Navier-Stokes equation with RNG turbulence model in this paper.

江苏大学能源与动力工程学院，江苏镇江 212013摘要：本文利用Navier-Stokes方程、RNG 湍流模型和欧拉-欧拉均相流模型，对轴流泵偏大流量工况下的空化流动进行了数值模拟。

Because hyperboloid gear wheel have a series of advantage, therefore it use than spiral awl gear wheel extensive.

3双曲面主动齿轮具有较大的轴向力，使其轴承负荷增大。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷