查询词典 geometric average

In the third chapter,We study some geometric properties and spectral propertiesof the Jacobi operator on a solvable extension G of Heisenberg groups H.In the firstsection,we give the definition of G and some fundamental geometric properties on G.Inthe second section,we discuss the Integrability of certain subbundles and the geometricstructure of the induced foliations in case of integrability.In the third section,we studythe spectral properties of the Jacobi operator of G.

可解李群与类对称空间亦密切相关，Damcek-Ricci空间即是广义Heisenberg的一可解扩张李群，在第三章中，我们构造且研究了Heisenberg群的一可解扩张李群G的几何性质，第一节讨论了G的曲率，李指数映射，整体坐标等基本几何性质；第二章研究了TG的某些子丛的可积性及可积时诱导叶片的几何结构；第三节给出了G的Jacobi算子的特征值和相应的特征子空间。

Computing the geometric relationship among geometric invariants is a direct application of these techniques.

几何不变量之间的几何关系的计算是这些技术的一个具体应用。

But also to geometric attacks such as cropping and rescaling, etc. Particularly, geometric transform such as translate, affine transform and rotation is always a difficulty for watermarking because these transforms change the position of image pixels.

特别是对于平移、旋转和仿射变换这一类的几何变换，由于造成了图像像素位置改变从而使得水印的提取极为困难，一直都是水印算法的难点。

Select geometry sofa flower, with a strong monochromatic lines may pillow; the fight black and white checkerboard tile floors are the most common and most of the flavor choices; Rugs can also use geometric patterns, particularly in the artist hand-crafted are the most unique; enclosure is proposed to geometric modeling paste with a light-colored skin, and even the way through the performance of hollow sense of space.

选择几何图形的沙发布花，则可搭配强烈单色系的抱枕；黑白棋盘式的拼砖地板则是最常见也最对味的选择；块毯也可选用几何图案，尤其以艺术家手工制作者最具特色；柜体则建议以几何造型搭配浅色贴皮，甚至还可透过镂空手法表现空间感。

The aims of this thesis are researching some typical NURBS surfaces geometric continuous conditions and pointing out the effects of knot vector and the degree of surface on geometric continuities.

本文的目的是研究一些典型的NURBS曲面的几何连续条件，指出节点向量和曲面片的次数对几何连续性的影响。

The purpose of this study is to discuss students' geometric concept and meta-cognition of quadrilaterals by employing the geometric thinking model developed by Pierre van Hiele and the performance assessment.

本研究旨在结合van Hiele几何思考模式与实作评量，探讨学生的四边形几何概念及其后设认知。

The method first embeds watermark into the geometric invariant Fourier-Mellin domain of an image to weaken the geometric distortion, brought by printing process, of the watermark in presswork, and the image is then used to create presswork via a legal printing process. Secondly, the method rectifies rescanned image from the presswork by using Radon transformation and the embedded watermark in it is detected. Since there is an obvious difference between the destruction degrees of the watermark caused respectively by legal and pirated printing process, we can judge whether a copy of presswork is valid or not just by computing the ratio of the successfully derived watermark and comparing it with a predefined threshold.

该方法先将水印嵌入到具有几何不变性的Fourier-Mellin域中，以削弱正版印刷过程中的几何失真对水印的破坏；再利用Radon变换对由扫描印刷品所获得的图像进行矫正，并从图像中提取嵌入的水印信息；由于正版和盗版印刷过程对水印的破坏程度区别明显，该方法最终通过计算水印提取的正确率来度量这种破坏，并将其与预先制定的阈值进行比较来判定印刷品的正伪。

Geometric measurement is one of important means controlling the manufacture of parts and the quality of assemblies. So raising the accuracy, speed and detection ratio of geometric measurement is the urgent affairs.

公差检测是控制零件制造和装配质量的重要手段之一，提高公差检测的精度、速度和检测率是制造业的当务之急。

This paper discusses the close relation of geometry and architectural aesthetics in the aspects of ratio scale, geometric curved lines, geometric curved surfaces, etc.

几何与建筑美存在着密切关系，从比例分割、几何曲线、曲面等方面探寻了几何与建筑美的奇妙关系。

It also makes assessment on the geometric control results derived from cantilever construction of Sutong Bridge and presents some constructive suggestions for further application of geometric control methodology in erection of cable-stayed bridges.

文中还对苏通长江大桥双悬臂施工中应用几何控制法的结果进行了评估，并讨论得出了几何控制法在斜拉桥施工控制进一步广泛应用的一些有意建议。

These are places without aristocratic baggage; egalitarian places open to talent, self-improving, engaged in learning and innovation through networks that were at once competitive and cooperative.

这些地方没有贵族遗风作祟，而且对于那些有天分的人是开放的平等之地，这些人善于通过那些曾经很具有竞争力与合作精神的关系网进行自我提高以及学习创新。

Christine: You don't want to see me?

你不想见我？