结构上

The results show that the microscopical pore structure of the three dimensional orthogonal woven carbon fabric structure perform is composed of body-centered cubes which arranged periodically at spaces. The net structure and shape of the pores of perform are determined by the size and proration of the fasciculus diameter, which are key factors influencing the gaseous permeability and final density of composites. Once the proration of the fasciculus diameters of different directions is determined, the trend of diversification of the permeability followed by pore rate during CVI process and the density of composites are stated, and the permeability increases with the increase of the fasciculus diameter.

研究结果表明：三维正交结构炭纤维预制体的宏观孔隙结构在空间上可以看成是由呈周期性排列的体心立方&晶胞&构成； X ， Y 和 Z 3个方向纤维束直径大小及比例关系决定三维正交结构炭纤维预制体宏观孔隙网络的结构和形状，也是决定反应气体在孔隙中的比渗透率和复合材料最终致密度的重要因素；当 X ， Y 和 Z 3个方向纤维束直径的比例关系一定时，不同预制体在CVI增密过程中比渗透率随孔隙率变化的趋势相同；复合材料的最终致密度一定；比渗透率随纤维束直径增大而略有增大。

Wagon body is a complicated weld structure. While physical wagon can not used to do fatigue test, how to make anti-fatigue design has been discussed in this paper. One coal hopper wagon has been taken as an example to study about anti-fatigue design of the wagon. First of all, based on finite element technique and the theory about how to predict fatigue life of weld structure, the technology route and key technique are given as well, which is based on AAR standard about weld structure wagon fatigue life predicted.

论文认为货车车体是复杂的焊接结构，为了使货车车体焊接结构抗疲劳设计在产品的图纸上就能卓有成效地展开，论文以新型煤炭漏斗车为研究对象，对煤炭漏斗车车体抗疲劳设计开展了一系列研究：首先，基于有限元算法和焊接结构寿命预测的疲劳理论，给出了基于北美铁路协会AAR标准的货车车体焊接结构寿命预测的技术路线及关键技术。

First, the theory of fretting wear and studies on fretting fatigue were introduced and the parametric method was used in the process of creating the model of dovetail joints in UG software. The elastic contact problem is analyzed in finite element method and is used to the parameters' distribution and contact stress of the joint are obtained on the base of ANSYS code. With the effect factor of load frequency, the prediction method of fretting fatigue life of dovetail joint under low and high/low cycle complex load is proposed. The proposed model and the approach were verified by experiments.

本文介绍了微动损伤的机理和微动疲劳寿命的研究方法；利用UG软件对燕尾榫联接结构创建了参数化实体模型；基于ANSYS软件平台求解弹性接触问题，获得了榫联接结构接触应力及接触状态量的分布；在已有微动疲劳寿命预测模型的基础上，引入载荷频率影响因子，对低周、高低周复合载荷作用下的燕尾榫联接结构进行了微动疲劳寿命的预测，与试验结果对比表明采用本文提出的方法预测榫联接结构的微动疲劳寿命是有效的。

Besides these, the dynamic simulationand structural finite element of the driving drum are also analyzed respectively. Its structure isoptimized to reduce the cost on condition that intensity and stiffness is satisfied and theoptimized structure is reanalyzed.

在虚拟样机模型的基础上分别对传动滚筒进行了运动仿真和结构有限元分析并对滚筒结构尺寸进行了优化，在保证结构满足其刚度强度条件下，尽量使结构轻便，并对优化前后进行分析。

After analyzing the intrinsic characters and the connection with urban development from the structure of planning and over arrangement structure,the author pays more comprehension to the structure of urban green system and cognizes the order and the connected factors which influence the planning.

从规划结构和布局结构两方面充分分析城市绿地系统结构的内在本质特征和与城市的相互关系。在此基础上进一步理解其含义，把握绿地系统结构的内在规律和外在影响因素。

WD40 domain, found in a number of eukaryotic proteins that cover a wide variety of functions including adaptor/regulatory modules in signal transduction, pre-mRNA processing and cytoskeleton assembly; typically contains a GH dipeptide 11-24 residues from its N-terminus and the WD dipeptide at its C-terminus and is 40 residues long, hence the name WD40; between GH and WD lies a conserved core; serves as a stable propeller-like platform to which proteins can bind either stably or reversibly; forms a propeller-like structure with several blades where each blade is composed of a four-stranded anti-parallel b-sheet; instances with few detectable copies are hypothesized to form larger structures by dimerization; each WD40 sequence repeat forms the first three strands of one blade and the last strand in the next blade; the last C-terminal WD40 repeat completes the blade structure of the first WD40 repeat to create the closed ring propeller-structure; residues on the top and bottom surface of the propeller are proposed to coordinate interactions with other proteins and/or small ligands; 7 copies of the repeat are present in this alignment.

WD40域，在真核蛋白质的数量发现，涵盖了包括各种功能适配器/信号转导，mRNA前体细胞骨架组装加工和管理模式；通常包含一个从11月24日生长激素肽的N残留端和西部数据肽在其C端和40残留长，因此得名WD40；之间的生长激素和WD是一个保守的核心，作为一个稳定的螺旋桨式平台，可以绑定的蛋白可以稳定或可逆性；形式与每个刀片是一个四叶片组成的几个类似结构的螺旋桨，搁浅反平行β-负债表；很少检测副本实例假设，形成了聚大结构，每个WD40重复序列形成了前三个链的一个刀片，并在未来的刀片上链，最后C -末端WD40重复完成了第一WD40重复叶片结构，创造螺旋桨的封闭环结构，对螺旋桨顶部和底部表面残留物，则建议协调与其他蛋白质和/或小配体； 7重复副本存在于相互作用这条路。

This seminar introduces methods for the structural analysis of historical monuments, including masonry, timber, iron, steel, and concrete structures. Short lectures will be followed by discussion sessions, together with weekly readings and a series of smaller assignments. Each student will write a final paper on a topic of their choosing. Final papers may be predominantly historical, with structural analysis to support the main arguments, or predominantly structural, with historical analysis to provide context.

概论该课程介绍了对历史丰碑上有名建筑的结构分析方法，涵盖了石材、木材、钢材、铁和混凝土结构等，课堂内以讨论的形式进行（结合每周的阅读和一系列小作业），每个学生自选主题写一篇论文作为期末论文，论文需用结构分析的方式去论证主要观点以体现显著的历史性，或者以历史分析的方式结合历史环境去表达其显著的结构特点。

This seminar introduces methods for the structural analysis of historical monuments, including masonry, timber, iron, steel, and concrete structures. Short lectures will be followed by discussion sessions, together with weekly readings and a series of smaller assignments. Each student will write a final paper on a topic of their choosing. Final papers may be predominantly historical, with structural analysis to support the main arguments, or predominantly structural, with historical analysis to provide context.

概论该课程介绍了对历史丰碑上有名建筑的结构分析方法，涵盖了石材、木材、铁、钢材和混凝土结构等，课堂内以讨论的形式进行（结合每周的阅读和一系列小作业），每个学生自选主题写一篇论文作为期末论文，论文需用结构分析的方式去论证主要观点以体现显著的历史性，或者以历史分析的方式结合历史环境去表达其显著的结构特点。

With the development of the marine in the world, more and more emphasis was paid to the structure of large-diameter reinforced concrete cylinder.

随着世界上海运的发展，大直径薄壳圆筒结构形式日益受到重视，采用大直径圆筒结构直接插入地基土体的结构形式是近年来在我国发展起来的一种港口工程结构形式。

Focusing on the unique characteristics, multi-driven and structure-alterable two-vehicle, of the dexterous window-cleaning robot, this paper puts forward a completely distributed robot system with cell structure and distributed intelligence.

本文针对灵巧擦窗机器人的多驱动、可构形双车体的特点，提出了一种&单元结构、分布智能&概念的完全分布智能式机器人体系结构，并且，在此基础上对灵巧擦窗机器人控制系统的实现结构、全局规划、运动学模型、镇定和跟踪、分布式软件结构和实现、硬件系统的研制等方面的问题进行了深入的研究。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。