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Research on techniques for the synthesis of ACR impact modifier with core-shell structure;2. Preparation of polymer-tungsten-silica composite microspheres with multi-layer core-shell structures;3. Organosilicon-acrylate micro emulsion with core-shell structure was synthesized with OP-10,JFC and amyl alcohol nonionic compounded emulsifier by means of seeded emulsion polymerization.

运用种子乳液聚合工艺以OP-10/JFC/戊醇非离子复合乳化剂合成了具有核-壳结构的有机硅-丙烯酸酯微乳液，研究了复合乳化剂类型、丙烯酸酯单体、有机硅单体加入方式和含量、pH值、硫醇对微乳液聚合过程中稳定性和光泽度的影响，通过差示扫描量热仪和透射电镜对微乳液的结构进行了表征。

The basic approach of protecting people from being hurt or killed in an accident is to improve crashworthiness of vehicles. This paper starts with discussing theories and methods for vehicle passive safety design, which included experiential methods, analytic methods, multi-body dynamics methods, crash test methods and the finite element method. Emphasis will be paid to the basic FEM theories and algorithms of impact problems. Topics discussed include the governing equation, element discretization, hourglass control, time integration, material model, shell element algorithms and contact-impact algorithms. For more reliable simulation results, this paper then conducts study on how to accurately get material model parameters by combining the FEM method with experimental method, and develops relevant material test machine and parameter calculating software. Based on that, basic typical impact simulation and test validation study are conducted. On the basis of the above work, the paper studies the thin-shell structures'crashworthiness, which was affected by the following factors: spot-weld features, shell thickness, cross-section and pre-deformation. As to vehicle parts'crashworthiness, the paper conducts simulation study of designing energy-absorbing steering system and adaptive airbag system. A practical energy-absorbing steering wheel is designed as an example. In further depth research, the paper suggests several inverse quantificational methods for vehicle crashworthiness design based on the ideal crash characteristics. The above theories and methods are applied with good results through several practical vehicles' crashworthiness design and improvement.

文中对汽车碰撞安全性的设计理论和方法进行了归类和总结，其中包括经验法、解析法、多刚体动力学法、试验法以及有限元方法等；重点介绍了碰撞有限元法的基本理论和有关算法，涉及到有限元求解控制方程、单元离散、沙漏模态控制、时间积分、材料模型和应力修正、薄壳单元算法以及接触碰撞界面算法等，探讨了有限元计算中的材料模型参数获取技术，开发了相应的材料试验装置及材料模型参数反求软件，在此基础上进行了基本的碰撞仿真算例和试验对比研究；文中通过应用有限元方法研究了薄壁构件的碰撞吸能特性，指出了设计薄壁吸能构件时需要考虑的几个主要影响因素，即焊点、壁厚、横截面和预变形等；在关于车辆部件的碰撞安全性能设计中进行了吸能转向机构和自适应安全气囊的仿真研究，提出了吸能转向机构和自适应安全气囊的仿真研究方法；文中最后探讨了整车碰撞性能的设计与改进方法，提出了以理想碰撞特性为目标，采用分段加速度或者根据碰撞时间进行设计的反推设计法、部件吸能仿真优化设计法等量化设计方法，并通过综合应用文中所讨论的相关技术进行了整车碰撞性能的设计与改进实例研究，所选定的车型是大众化的普通轿车和碰撞安全性基础较差的微型面包车，研究结果表明，本文所提出的设计与改进方法是适用而有效的，具有重要的工程实用意义和价值。

Any of numerous anatomically distinct structures making up the skeleton of a vertebrate animal.

骨头：在解剖学上构成脊椎动物骨架的大多相互区别的结构。

In practice, in order to obtain the boundary of a 3-D object, there's usually tens, even hundreds of slices to be segmented. It is very tedious that an expert anatomist manually delineates the boundaries of different structures.

另一方面，由于医学图像的分割往往需要处理多张切片，由医生手工逐一勾勒出每张切片中的对象边缘不仅十分繁琐，而且准确性完全依赖于医生的影像专业经验。

The plate anchor is a new anchor foundation of moored deep-sea offshore floating structures.

平板锚是新近出现的一种系泊深海浮式结构的基础型式。

For some structures which need repairing and strengthening, the author mentions some corresponding measures such as anchor spraying, stick steel plate and chemical grouting amending. These repairing and strengthening maintenance measures not only eliminate hidden trouble of security of old bridges but also enhance their bearing and traffic valume capacity.

针对发现的问题，提出旧桥在日常维护中应注意的事项；对一些需要补强、加固的结构部份，考虑经济适用的原则，提出了锚喷法、粘贴钢板法、化学灌浆修补法等相应的措施。

Pre-stress method is widely used in engineering structures in which anchorage plays a very important role.

预应力方法已经广泛应用于工程结构中，其中锚具有着至关重要的作用。

"Surface relics include ancient structures, caves, temples, and other historic buildings."

地面文物包括古建筑，洞穴、寺庙和其他历史建筑。

"Surface relics include ancient structures, cave s, temples, and other historic buildings."

地面文物包括古建筑，洞穴、寺庙和其他历史建筑。

Machu Picchu and Angkor Wat are two of the most amazing structures known to mankind.

马丘比丘和吴哥窟都是最为人所知的奇特建筑。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。