光线追踪技术是目前在二维显示设备上产生三维真实图象的最通用、最有力的技术。

Ray tracing is the most general and powerful technique now available to create three dimensional realistic images on two dimensional display devices.

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最近，英国的夏普实验室在一台液晶显示器上展示了超乎寻常的三维效果，常规的二维显示仅超过50%。

One recent LCD from Sharp's laboratories in Britain provides stunning 3-D effects for only 50% more than a conventional 2-D display.

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因此本文从论述COM的基本概念入手，以实现二维显示组件结束，对组件这一组件式地理信息系统的基石做了充分的论述。

So this paper proceeds with the introducing of com's basic concept, end with realizing two dimension electron map display components and doing perfect self-consistent in establishing ComGIS.

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