Three dimensional ground model and three dimensional road model are established on the basis of digital to analog.

以数模为基础建立三维地面模型和三维道路模型。

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Rayleigh wave propagation and dispersive curve in single layers semi-infinite space model and three dimensional road embankment are studied comprehensively by using finite difference software FLAC3D.

笔者利用有限差分软件FLAC3D，对单层介质半无限大体和三维路基体的瑞利波传播特性以及频散曲线进行了数值模拟分析；

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The traditional three-dimensional pavement reconstruction reflects part of the road information, it is difficult to establish a intuitionistic three-dimensional model.

传统的路面三维重构大多数仅反映了路面的部分信息，很难建立出立体直观的三维路面模型。

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The laser beams on the Tele Atlas vans scan each building on the road thousands of times, creating a three-dimensional model of the neighborhood that, when matched to photos from the high-resolution cameras, can be used to re-create a realistic cityscape.

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