A new light model sand-asphaltic sand was used in the Yangtze river estuary sediment model, the applied result is successful.

新型轻质模型沙—沥青沙已成功用于长江口深水航道工程泥沙模型。

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The model is made up of six sub-models, which are traffic light model, traffic generation model, traffic driving model, velocity restricting model, map description model, map analysis model.

在此基础上，建立了交通仿真模型，包含六个子模型，分别是交通信号灯变化模型、车辆产生模型、车辆行驶模型、车速限定模型、路网描述模型、路网分析模型。

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At the end of the thesis, I select lens flare technology to create the signal light model to increase the realistic of the visualization scenery.

最后论文采用镜头光斑技术来生成航标灯灯光效果，从而增加可视化场景的真实感。

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Then, the basic principles of drawing 3d graph by computer are discussed, particularly explained the fundamental theory of coordinate transform, projection transform and light model.

对三维图形计算机显示的基本原理进行了讨论，详细介绍了坐标系变换、投影变换和明暗处理及光照模型的基本原理。

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Then, the basic principles of drawing 3d graph by computer are discussed, particularly explained the fundamental theory of coordinate transform, projection transform and light model.

对三维图形计算机显示的基本原理进行了讨论，详细介绍了坐标系变换、投影变换和明暗处理及光照模型的基本原理。

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