研究工程

Beijing Aeronautical Research Center of Engineering Technology , Beijing 100076 , China

北京航空工程技术研究中心，北京 100076

One of the professors was a Romanian who is known for his research in aeronautical engineering.

其中一名教授是罗马尼亚人，他以航空工程方面的研究而闻名。

Beijng Aeronautical Technology Research Center, Beijing 100076, China

北京航空工程技术研究中心，北京 100076

It has outstanding differences between customer's importance and satisfaction of service quality. According to the importance-satisfaction matrix analysis, the second quadrant is the「first-improved zone」. The improved items include :「TWC servants help their customer to solve problems at full steam.」,「TWC charges customers correctly.」 and 「TWC customers can get any information aforehand.

研究结果显示服务品质重视程度与满意程度有显著性的差异，依台水公司用户服务品质重视程度与满意程度分析图而言：第二象限「优先改善区」急需改善的项目分别是「台水服务人员会在用户遭遇问题时尽力协助解决」、「台水计费及抄表数据记录准确可信」、「台水用户可事先获知自来水工程施工停水讯息」等。

By means of modal analysis and the finite element method, the dynamic characteristic of agitator was researched in this paper.

试验模态分析广泛应用于工程领域，是研究一个系统的振动特性主要途径之一。

ABSTRACT Computer Aided Engineering is one of important research field.

计算机辅助工程是目前广泛研究的课题之一。

So, it has the particularity and the application value to study the air distribution of the station.

因此，该水电站的气流组织研究自然有其特殊性，也具有颇大的工程应用价值。

Linear Algebra is mainly a subject which studies the linear structure of finite dimensional linear space and its linear transformation while linear concept is in itself from the old Euclid Geometry. The concept of "Linear Space" is a kind of algebraic abstract. In many fields of modern engineering project and technology, because of the influence of computer and graph showing, the algebraic disposal of geometric questions, the visual disposal of algebraic questions, algebra and geometry are tightly combined.

线性代数主要是研究有限维线性空间及其线性变换这一代数结构的学科，而线性概念究其根源则是来自古老的Euclid几何，线性空间概念是几何空间的一种代数抽象，在现代工程技术的许多领域里，由于计算机及图形显示的强大威力，几何问题的代数化处理，代数问题的可视化处理，把代数与几何更加紧密地结合在一起。

In this paper, we have made a systemic theoretic research on modelling and reshaping several types of spline curves/surfaces in CAGD. And some creative productions are given as follows. At first, the uniform C-B-spline basis is proved to be a normalized totally positive basis, and can be extended to a normalized B-basis. C-B-spline and C-Bézier basis, similar to B-spline basis and Bézier basis in algebraic space, are two bases in algebraic trigonometric space.

本文围绕着CAGD中常用的几种曲线曲面造型和形状调整进行了深入的研究，主要获得了以下一些成果：首先，证明了代数三角空间中的n次均匀C-B-spline基是一组标准全正基，并进一步扩充为一组标准B基。C-B-spline基与C-Bézier基是多项式与三角混合空间中的两组基，是适应工程实践中设计特殊曲线曲面的需要而产生的，类似于多项式空间中的B-spline基与Bézier基，是CAGD中重要的造型工具。

The study indicated that current and displacement stiffness are constant in the range of allowable engineering error. There is a linear range to the magnetic force. The simplified linear model meets the requirement of controller design. The more precise control precision is, the smaller linear range is.

研究表明，在工程误差允许范围内，位移刚度和电流刚度可视为定值，即此时电磁力方程在应用上存在较大的线性区间，因此简化的线性化模型完全可满足控制器设计的需要，且线性区间随着控制精度提高而减小。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。