四维时空

分析了GIS在矿山建设和生产管理中的综合应用，着重研究了GIS中的数据存贮结构，将四维时空数据结构与矿井生产相联系，并探讨了矿山GIS所包含的内容。

GIS application to construction and production in mines is analyzed . Data storage structure of GIS is emphatically studied . Four-dimensional spacetime data structure is integrated with mine production .

我们发现仅对于Yang-Millsbaby宇宙，流形紧致到四维时空的几率才可能最大。

We find that the probability for the Yang-Mills baby universe to undergo a spontaneous compactification down to a four-dimensional spacetime is greater than that to remain in the original homogeneous multidimensional state .

第四部分我们根据最近对似正规模新的物理解释，研究了四维时空中近极端Schwarzschild-DeSitter黑洞的量子化。

In chapter four , motivated by the recent work about a new physical interpretation of quasi-normal modes , we investigate the quantization of near-extremal Schwarzschild-de Sitter black holes in four-dimensional space-time .

因Birkhoff定理是对不含宇宙项∧的四维时空成立，本文将该定理推广到含宇宙项∧的高维时空。导出了当宇宙项存在时的schwarzchild内部解。

Because Birkhoff theorem is established in four dimensional times and spaces without cosmic term ∧, the paper , however , spreads this theorem to a higher dimensional space and time containing the cosmic term ∧ .

卫星云图四维时空变换和特征参数提取方法

Four dimension spatio-temporal transform and characteristic parameter extraction method for satellite images

四维时空电磁场理论探讨

A Discussion of Theory of Electromagnetic Field in Four-Dimensional Space-Time

本文在四维时空中描述了无粘可压缩不定常流的双特征理论，提出了一种不定常激波的追踪方法。

The Bicharacteristics-Method for unsteady , compressible and inviscid flow has been developed in four .

四维时空的模型展现

Showing of 4-dimensional Space-time with Models

人类历史上所有的文化经典都是在绵延无尽的四维时空中展开的历史流传物。

All the cultural classics in the history of mankind are the historical relics unfolding in the far-stretching four-dimensional space .

另一方面，视觉设计的传播方式也发生了革命性巨变：1。二维、三维传播模式向四维时空不断超越。

The broadcast channel of the visual design has been changed much : 1.Two-dimensional and three-dimensional broadcast channels have been replaced by four-dimensional channel .

就目前而言，人们只了解一维时间、二维平面、三维空间以及爱因斯坦提及的“四维时空”概念。

For now , people only know about the one-dimensional time , two-dimensional , three-dimensional space , and Einstein , the reference to " four-dimensional space-time " concept .

我们假定四维时空的能量密度是以辐射为主的，而内禀子空间的能动张量是一个阶跃函数。

The energy density of the 4-dimensional spacetime is supposed to be dominated by incoherent radiation and the energy-momentum tensor of the internal subspace is a step function .

建筑空间设计哲学越来越走向开放和兼收并蓄，更多的设计师倾向将平面构成作品渗透到四维时空的各个界面中去，以产生全新的视觉片段。

The construction space designing philosophy leads to more open and takes in everything . More and more designers tends to penetrate the plane-forming work of art into " four-dimensional space ", thus producing brand-new visual effect .

成矿年代学以成矿地质年代时间维为主线，应用地质构造、岩石、矿物、矿床和同位素地质等多学科综合技术方法，在四维时空上研究成矿地质历史演化和规律。

Metallogenic chronology is a way to study the history of metallogenic evolution and metallogenic laws of 4 dimension time space , particularly metallogenic time dimension , by using the metallogenic dating results and the synthetic method such as tectonics , petrology , mineralogy , ore deposits , isotopic geology .

双曲复空间RH同构于四维Minkowski时空，而其上的双曲相位变换群U4（H）就是四维相对论时空中的洛仑兹（Lorentz）变换群。

The hyperbolic complex space R_H is isomorphic to the 4-dimensional ( 4D ) Minkowski spacetime , and the hyperbolic phase transformation group U_4 ( H ) in R_H is just Lorentz transformation group on 4D relativistic spacetime .

以高斯函数作为滤波核，用多比例方法构造了一个四维比例时空空间。

A4 D scale spatiotemporal space is constructed by multiscale approach using Gaussian as a filtering kernel .

推证了电场和磁场在四维复时空中的相互转换及互为表达关系，并讨论了电场和磁场中的几个不变量关系。

This essay proved correlation for electric and magnetic field in four-orientation complex time and space , made an inquiry into a few invariable concerns .

然后，研究了在四维平直时空下三个单粒子态构成的量子态的负能密度。

Secondly , we investigate the energy density produced by a state vector which is the superposition of three single electron states in the Dirac field in the four-dimensional Minkowski spacetime .

展馆建筑四维空间的时空理念探索研究

Exploration research on time and space idea of four dimensional space in exhibition building

一般四维稳态弯曲时空的能量

Energy of General 4-dimensional Curved Spacetime