在中间层，可移植的图形引擎提供对线的绘制、区域的填充、多边形、裁剪以及颜色模型的支持。

At the middle level, a portable graphics engine provides support for line draws, area fills, polygons, clipping, and color models.

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由于该设备能够将位置信息中继转发到移动可部署的静态控制室的计算机系统，因此很容易绘制位置信息，并显示在地图显示器上。

Due to its ability to relay position to a computer system in a mobile, deployable static control room, the position can easily be plotted and shown on a geographical map display.

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他的公司已经研制出一种可绘制房间地图的装置，这种装置可以在绘制完成后上传地图，再获得新的指令。

His firm is already developing a device that can map a room, then report back for more instructions.

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