点

And both symmetry-breaking bifurcation point and symmetry-recovering bifurcation point were calculated.

并计算了系统发生对称性破缺分岔点和对称性恢复点。

However, Hausdorff distance is a measure for two binary point sets, not for grayscale point sets.

但是，Hausdorff距离是两个二值点集合间的测度，而不是灰度点集合间的测度。

Firstly, the method fits each vertex and its local neighborhood of the clothing and human models by constructing the biquadratic Bezier surface. It can estimate the Gaussian curvature and the mean curvature of each vertex. Then, the feature points of two mesh models are extracted according to curvatures.

该方法基于双二次Bezier曲面局部拟合服装模型和人体模型的网格顶点及其邻近点，估算出人体和服装模型网格顶点的高斯曲率和平均曲率，然后提取出人体和服装模型两点集的特征匹配点。

Applyingthe sufficient and necessary condition of biquadratic Bézier patch being non-negative,a method is presented to see whether two points are the closest points between twobiquadratic NURBS surfaces when the two points are respectively on the two surfaces. Based on the method, the surface split algorithm is improved while the surfaces arebiquadratic NURBS surfaces.

本文利用双二次 Bézier 曲面为非负的充要条件，提出了分别位于两张双二次 NURBS 曲面上的点是否为这两张曲面间距离最近的点的判别方法，并由此在双二次 NURBS 曲面的场合对计算最短距离的曲面分割法作了改进。

I also like singing and dancing. I would like to become a birdwatcher because I like birds and nature very much.I think it is important for me to do something to protect birds.I want to know about birds,too.

因为我喜欢鸟和本质，我愿意成为a观察研究野鸟的人非常much.I想一想做，保卫birds.I贫穷星期日too.I罐情欲高潮向俱乐部 activities从到午后4点午后5点了解鸟的东西是对自我重要的。

Wai Pong Yu was born in Hainan Island, China in 1982. He moved to Hong Kong with his family when he was 2 years old. After graduated from the Chinese University of Hong Kong, the Department of Fine Arts in 2006, he continued his artist life with biro drawings focusing on lines and dots on paper.

韦邦雨，1982年生於海南岛，2岁时移居香港。2006年毕业於香港中文大学艺术系后，继续以原子笔创作绘画，专注於纸上的线和点，并相信线会奏动，点会流动。

This paper studies the electrode combination of 3D tunnel DC focused method. At first, the authors calculate and analyze the current distribution of two point power sources with the same electrical property, and indicate that as currents exclude each other, current density has a maximum at a certain depth along the perpendicular bisector of the two point power sources and the depth is directly proportional to the distance between them.

本文研究了三维坑道直流聚焦法电极组合，首先计算分析了两个同性点电源的电流分布规律，指出由于电流的相互排斥作用，电流密度在这两个点电源的中垂线下一定深度处产生最大值，这个深度与这两个点源之间的距离成正比。

In this paper, we propose a new visual cryptographic method for gray-level and chromatic images without pixel expansion. We simultaneously encrypt m successive pixels (called an "encryption sequence") each time in accordance with two basis matrices. In every m encryption sequences with b blacks, we make sure that b encryption sequences are encoded by black basis matrix, and the other ones are encoded by white basis matrix.

本研究提出一种不需要像素扩展的灰阶和彩色视觉密码的技术；我们的方法利用多点同时加密的概念，每次取连续的 m 个点做为加密序列进行加密，我们的方法可以确保在 m 个具有 b 个黑点的加密序列中，一定会有 b 个加密序列是使用黑点基础矩阵加密，另外的个则使用白点基础矩阵加密，因此在叠合影像上黑与白的变化很规律。

To illustrate, let's look at the game of blackjack.

为了说明这点，请看看扑克牌的21点。

In blackjack, the thing is to get nearest to 21 without going over.

在玩21点时，目标是争取达到而不超过21点

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。