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- In order to enhance the security of hashing algorithm, the authors propose a generalized two dimensional matrix hashing algorithm. 摘要为提高置乱算法的安全性，提出一种广义的二维矩阵置乱算法。
- A new color video coding method whichcombines 4D-MDCT and four dimensional intra prediction is proposed. 该文基于4D-MDCT并结合四维帧内预测技术提出了一种彩色视频编码的新方法。
- The math behind Quaternions involves four dimensional linear algebra, which is very difficult to understand. 四元组的数学意义是一个较难理解的四维线性代数。
- I was seeing in four dimensions at once. 我同时看到四个维度。
- Using the Gauss-Bonnet theorem, Stephen Hawking proved that the topology of the event horizon of a (four dimensional) black hole is a 2-sphere. 使用高斯-博内定理,史蒂芬·霍金证明一个（四维）黑洞活动视界的拓扑结构是2个球体。
- By analogizing the coordinate conversion of two-dimensional plane,we turn the Minkowski four dimensional space,and deduce the Lorentz transformation. 转动闵可夫斯基四维空间,类比二维平面坐标系转动的坐标变换关系,导出洛伦兹变换关系。
- For structure with elastic plastic materials and large displacements & deformations, the similitude relations can be deduced from Buckingham Pi theorem by using the Dimensional Matrix Analysis Method. 以 Buckingham Pi定理为基础，运用量纲矩阵法，导出了动态大位移大转角弹塑性相似结构的相似关系。
- The modulated vector and the four dimensional index of all Bragg reflections of incommensurately modulated structures were determined. 据此对单晶衍射数据进行了四维空间的指标化。
- Dynamic similarity criteria for large displacements & deformations of structures with elastio plastic material are presented. The Buckingham Pi theorem and the Dimensional Matrix Analysis Method are used. 以 Buckingham Pi定理为基础 ;运用量纲矩阵法 ;导出了弹塑性大变形结构的动态相似准则 ;在此基础上 ;根据有限元法分块近似的基本思想及显式时间积分格式 ;比较了弹塑性大变形相似结构动力响应的相似计算与对每一个结构分别进行显式有限元计算所得结果的精度 .
- Specified by or exhibiting four dimensions, especially the three spatial dimensions and single temporal dimension of the relativity theory. 四维的，四度空间的由四维确定或表现的，尤指三个空间维度和相对理论中的时间维度
- Examples of the absoluteness include the principle of invariance for velocity of light, the principle of special relativity, the principle of general relativity, eigenlength, eigentime, Minkowski four dimensional space-time. 在教学中常常强调其中的”相对”，而忽视了相对论中还有“绝对”的一面，如光速不变原理、狭义相对性原理、广义相对性原理、本征长度、本征时间、闵可夫斯基四维时空等都具有绝对性。
- Academic liberalism has four dimensions of economic,political,social ethics and philosophical doctrines. 学理上的自由主义 ,主要有经济学说、政治学说、社会伦理学说和哲学学说四个维度。
- theory of four dimensional personality “四维”人格理论
- Quaternions extend the concept of rotation in three dimensions to rotation in four dimensions. 四元数将三维中旋转的概念扩展到四维中的旋转。
- You can represent the transition function as a two dimensional matrix, 可以将转换函数表示为两维矩阵
- Exploratory Factor Analysis (EFA) showed that the Competition Scale has four dimensions including nine sub-dimensions. 该初始版本具有竞争倾向、竞争动机、竞争策略和竞争内容4个维度，共包含9个子维度。
- four dimensional fundamental form 四维基本形
- four dimensional space-time continuum 四维空间的连续区
- Specified by or exhibiting four dimensions, especially the three spatial dimensions and single temporal dimension of the relativitytheory. 四维的,四度空间的由四维确定或表现的,尤指三个空间维度和相对理论中的时间维度。
- Specified by or exhibiting four dimensions,especially the three spatial dimensions and single temporal dimension of the relativity theory. 四维的，四度空间的由四维确定或表现的，尤指三个空间维度和相对理论中的时间维度
