而在机械世界中，并不普遍存在着类似于这种表现模型的概念的情况。

This concept of the represented model has no widespread counterpart in the mechanical world.

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最后建立了地质勘察平面图、等值线图、柱状图和剖面图四种GIS表现模型。

Finally, there are four types of representation models based GIS, which are plan, contour map, histogram and section map.

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在软件世界里，程序的表现模型可以(也常常应该)与程序的工作结构迥然不同。

In the world of software, a program's represented model can (and often should) be quite different from the actual processing structure of the program.

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This is a feature of DNA shown in this cartoon form, so if you can keep that sort of schematic in mind, it makes it a lot easier to understand the detailed structure.

这是卡通模型所表现的DNA的特点之一,如果你能把这个模型记住,你会很容易理解DNA分子的详细结构

耶鲁公开课 - 生物医学工程探索课程节选