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三维地层结构
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  stratum structure
     The Simulation of 3D Stratum Structure Based on Java/Java3D
     基于Java/Java3D的三维地层结构模拟
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     We compare the strengths in render 3D terrain and statum structure between Java 3D with the traditional 3D graphics technique(OPENGL,DirectX,VRML.etc)and simulating a 3D visually system about stratum structure by Java 3D in this paper. We have proved its validity through a experimentation.
     分析了Java3D技术与传统的三维可视化编程技术(如OPENGL,DirectX,VRML)相比较在绘制三维地形和地层结构方面的优势,利用Java3D技术模拟实现了一个三维地层结构的可视化系统,并通过试验证明了其有效性。
短句来源
  3 d stratum structure
     The Simulation of 3D Stratum Structure Based on Java/Java3D
     基于Java/Java3D的三维地层结构模拟
短句来源
  3 dimension strata structure
     Based on Digital Elevation Model (DEM), 3 Dimension strata structure model through developing multiplayer DEM is formed.
     以数字高程模型 (DEM)为基础 ,发展了多层DEM ,形成了三维地层结构模型 .
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  “三维地层结构”译为未确定词的双语例句
     In this paper three-dimension-geology stratum based on TIN(triangulated irregular network) data is constructed by building multi-layer DEM surfaces model and the scheme and the technology for geology profile visualization is also introduced . Finally,the authors test and realize the former designs with OpenGL and Visual C ++ on computer.
     通过建立多层DEM表面模型构造三维地层结构 ,讨论了利用不规则三角网模型以绘制多层三维地层模型和三维剖面的技术和方法 ,并在微机上进行了实现。
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    By Geophysical Tomography, it is meant inversion which presents a linear integral relationship between the data observed and formation parameters. The paper introduces that based on seismic reflection data, the inversion can be performed for 3-D subsurface structure and by the same token it can come true for the imaging of velocity by seismic ray tomography with the continuous curved surface in homogeneous, isotropic layered media. The forward modelling is performed by ray-tracing based on Fermat's principle,...

    By Geophysical Tomography, it is meant inversion which presents a linear integral relationship between the data observed and formation parameters. The paper introduces that based on seismic reflection data, the inversion can be performed for 3-D subsurface structure and by the same token it can come true for the imaging of velocity by seismic ray tomography with the continuous curved surface in homogeneous, isotropic layered media. The forward modelling is performed by ray-tracing based on Fermat's principle, i.e. to determine the intersection of rays and interfaces by solving the non-linear coupled equation from the least time principle. The purpose of performing seismic C-T technique is to find an earth model where the travel time residuals of calculated data and observed data are minimized. In normal practice, the way we obtain the correction of the updated value of model parameters from travel time residuals is by solving a damped least square problem and then processing it iteratively until we are happy with the result turned out.

    观测数据与地层参数之间呈线积分关系的反演称作地球物理层析成像。本文介绍在连续曲界面均匀各向同性层状介质情形下,根据地震反射资料反演三维地层结构及地震速度的地震射线层析成像方法。正演模型射线追踪是根据Fermat原理实现的,即求解由时间最小原理列出的非线性方程组得到射线与界面的交点。反演的目标就是求解这样的地层模型,使其射线追踪走时与观测走时的残差为极小。具体做法是根据走时残差求取模型参数修正量的阻尼极小二乘解,循环迭代直至满足要求为止。 文中给出了两个合成资料反演的例子。一个是合成的P波走时数据(加随机噪声)的反演,其结果与真实模型能较好吻合。另一个例子则同时考虑P波及反射P—SV转换波走时,反演包括P波速度和SV波速度对三维速度结构。利用P—SV波进行P波和SV波速度结构的成像是本文的一个进步。

    The idea of 3 Dimension Strata Information System and the importance of digital geotechnical engineering are clarified. Based on Digital Elevation Model (DEM), 3 Dimension strata structure model through developing multiplayer DEM is formed. By a visual 3 Dimension strata structure model of a light railway station and a visual subterranean engineering structure model in mine, ushered in successful application of 3 Dimension Strata Information System.

    阐明了三维地层信息系统的概念和岩土工程数字化的重要意义 .以数字高程模型 (DEM)为基础 ,发展了多层DEM ,形成了三维地层结构模型 .以一个轻轨车站三维地层结构和一个矿山地下工程结构的可视化图象展示了本系统的成功应用

    In this paper three-dimension-geology stratum based on TIN(triangulated irregular network) data is constructed by building multi-layer DEM surfaces model and the scheme and the technology for geology profile visualization is also introduced . Finally,the authors test and realize the former designs with OpenGL and Visual C ++ on computer.

    通过建立多层DEM表面模型构造三维地层结构 ,讨论了利用不规则三角网模型以绘制多层三维地层模型和三维剖面的技术和方法 ,并在微机上进行了实现。

     
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