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- 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。
- 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。
- 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。
- theory of four dimensional personality “四维”人格理论
- four dimensional fundamental form 四维基本形
- four dimensional space-time continuum 四维空间的连续区
- 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。
- Minkowski four dimensional space 闵可夫斯基空间
- 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。
- Four dimensional suspension traction 四维悬吊牵引法
- 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 echocardiography 心脏四维回波描记术
- Four dimensional ultrasound imaging of heart 心脏四维超声波成象术
- 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
