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The computational complexity for vector quantization used in image coding is a key problem to design a vector quantizer.

矢量量化用于图象编码的计算复杂度是矢量量化器设计的一个关键问题。

The normal vector of each data point is calculated without reconstructing surface, and then realizing radius compensation with probe radius by going along normal vector.

该方法具有简单方便、准确性高的特点。在对复杂的模腔进行数据采集时，有时需要通过多次测量才能全部实现。

A modified differential evolution algorithm was presented. In the proposed algorithm, the difference vector, which is employed in mutating each individual by simple differential evolution algorithm, was recorded. Each mutated individual was taken as the center of a neighborhood, the corresponding difference vector as radius.

提出了一种改进的差分演化算法，该算法记录下了差分演化算法在对每个个体进行变异操作时的差向量，然后以被变异的个体作为邻域的中心，以所记录的差向量作为邻域的半径，再在这个邻域内进行一次挖掘式的搜索。

Based on Lissajou figures, using radius vector deviation to express figure form deviation, the relation between radius vector deviation and signal waveform parameters is analyzed.

以Lissajou图形计算法为基础，用向径偏差来表征图形形状偏差，分析了向径偏差与信号波形参数之间的关系，设计了编码器动态细分误差快速评价系统。

Vexel art is a digital art that is an entirely pixel-based form of raster art that imitates the vector graphics technique, but is distinguished from normal vector graphics or raster images.

Vexel art是一种数字艺术，完全是基于像素的光栅艺术形式，模仿矢量图形技术，但正常的矢量图形和光栅图像是有区别的。

The difference between vector graphics and raster graphics, therefore, is that vector graphics are not translated into bit maps until the last possible moment, after all sizes and resolutions have been specified.

矢量图和位图的不同导致在所有尺寸和像素被确定后，不到最后一刻，矢量图不会被转换成位图。

By the definition of Darboux type vector and rectifying Darboux type vector ,we constructed the rectifying type developable surfaces and Darboux type developable surfaces and tangential Darboux type developable surfaces ,and study these three developable surfaces relationship with Minkowski slant helices and Minkowski conical geodesic curves. Bying applying the singularity theoerical knowledge, We give a classification of special developable surfaces under the condition of the existence of such a special curve as geodesic.

通过定义三维Minkowski空间中的达布型向量以及修正达布型向量，构造出三维Minkowski空间中的三类可展曲面，即修正型可展曲面、达布型可展曲面和切达布型可展曲面，研究Minkowski斜螺线和Minkowski锥面测地线这两种特殊曲线和这些曲面的关系，并研究Minkowski斜螺线和Minkowski锥面测地线作为这些曲面的测地线的条件下，运用奇点理论的知识，对这三种可展曲面进行奇点分类。

Then we propose a new modeling method: Support vector machine, especially the support vector regression, kernel function.

然后提出了一种新的建模方法：支持向量机回归算法，该算法的核心部分是核函数与两个模型参数的确定。

Pulse Width Modulation technique is one of the most important contents in the digital current control. Two PWM algorithms–Asymmetric Regular Sampling PWM and Space Vector PWM, is described. in detail, and then a fast algorithm of Space Vector PWM is got by combining the advantages of the two algorithm.

脉宽调制技术是数字电流控制中的核心内容，文中详细分析了非对称式规则采样法和空间矢量法两种PWM调制方法的原理和计算方法，在对这两种方法比较的基础上，介绍了一种空间矢量PWM的快速算法。

Firstly, the damaged structure was measured to obtain the residual force vector matrix. Then the matrix was compared with the one of undamaged structure to get the difference matrix. The biggest absolute value in each row of the difference matrix formed the improved residual force vector.

该方法首先通过测试损伤结构多阶模态得到残余力向量，并计算相对于损伤前结构的残余力向量得到残余力向量差矩阵，选取向量差矩阵各行元素中最大绝对值组成改进的残余力向量。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。