研究工程

In this thesis, the theory, algorithm and applications combined with the project "research on the feature extraction and analysis of XX acoustic vector" are discussed, according to the present development, main problems and practical needs in application of feature extraction of pressure and acoustic vector signals.

本文根据声压和声矢量信号特征提取的研究现状、存在的主要问题以及工程实际应用的基本要求，结合基金项目"XX声矢量特征提取与分析研究"的内容，对目标特征提取及其分类识别进行了理论、算法与应用方面的探讨。

In this paper combined with practical works the bearing capacity of composite foundation of deep-mixing piles in adamic earth region is studied based upon BP network.

指出BP神经网络是一种旨在模仿人脑结构及其功能的信息处理系统，根据收集的工程实例，应用BP神经网络对红粘土地区深层搅拌桩复合地基的承载力进行了研究，分析探讨了各主要因素对地基承载力的影响，为其进一步的研究奠定了基础。

The work of this dissertation hopes to provide some useful reference for the construction of UHV transmission projects, hopes to provide a more effective theoretical basis for the design of aeolian vibration control and subspan oscillation control, and hopes to lay the foundation for a more in depth study of this subject in the future.

希望本文的研究能够为特高压输电工程的建设提供一些有益参考，为输电线的微风振动控制设计及次档距振荡控制设计提供更为有效的理论依据，为以后更深入的研究打下一点基础。

The maximum yield team should include the following:(1) an agronomist;(2) a plant breeder;(3) a pathologist;(4) an entomologist;(5) an agricultural engineer;(6) a soil scientist; and (7) an economist. These specialists should have both research and extension expertise.

最高产量研究课题组应包括如下几方面的人才：1）农学家；2）育种家；3）病理学家；4）昆虫学家；5）农业工程专家；6）土壤学家；7）经济学家；这些专家不但应具有研究的才能，而且还应有丰富的推广经验。

Recently it has been a hotspot in airdrop and recovery. But its academic research could not keep up with its development in engineering.

目前翼伞系统已成为空投和回收领域研究的热点，但理论研究的水平还远不能满足工程应用的需求。

In this thesis, the aerodynamic load simulation of one type of helicopter airscrew is studied, and the systems structure and its mathematic model are analyzed.

论文结合实际的工程项目，以某型号直升机旋翼气动载荷模拟为研究内容，对加载系统的组成、系统数学模型进行分析和研究。

The results of this paper have some reference value to the analogously projects and similar study.

研究成果对类似的科学研究和工程问题都具有一定的借鉴意义。

And then, the exploitation methods and the key techniques of USIS, including data base design, main surface realization, MAPGIS secondary development, OpenGL 3D mapping techniques and digital mapping and intellective analytical technology, are discussed.

介绍了建立地下空间信息系统的目的和意义，论述了USIS的开发方法及其关键技术，包括：数据库技术、界面实现技术、MAPGIS二次开发技术、OpenGL三维图形开发技术、数字制图与智能分析技术等，并结合东深供水改造工程地下空间信息系统进行了开发方法和关键技术的应用研究，最后，对USIS的发展趋势作了较深入的分析，指出了今后研究的几个主要方向。

Pre-stressed composite space truss is one of the new kind of space structure systems developed on the basis of prestress and space truss, which consists of steel and reinforced concrete. At present the study in this field is just being begun in our country. Therefore, in this paper static and dynamic performances of pre-stressed composite space truss associated with a practical engineering are studied, in addition, dynamic test on construction site and model experiment are done. Finally, we conclude this structure is well in stress and stiffness and dynamic characteristics.

预应力组合网架是一种基于网架和预应力技术发展起来的由钢和钢筋混凝土组合而成的新型预应力空间结构体系，目前国内在此领域的研究和应用都较少，为此，本文结合实际工程对预应力组合网架进行了静力和动力的分析研究，并作了施工现场的动力测试及模型试验，总结出预应力组合网架受力比较合理，刚度、动力特性好，是值得推广的一种空间结构形式。

In 2003, The initial research and project definition was a joint endeavour between the University of Texas at Austin/Human Factors Research Project and ICAO.

NOSS计画最初的研究，开始於2003由国际民航组织与美国德州大学的人因工程研究小组合作，并委由国际飞航管制员协会成NOSS研究团队进NOSS试规划及规范之撰拟。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！