Petzl have done a massive effort to put up and clean a lot of routes ready for this trip, and to put the place on the map.

Petzl已经进行了非常卓越的工作，为这次活动开出许多线路，进行了清理，并制作了路书，把这里呈现在地图上。

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Since characters and map symbols often overlap with useful image features, the algorithm of principal curve detection aims to obtain "clean" feature images from the original maps.

由于测绘图中的文字、符号常常与有意义的图像特征重叠，主曲线检测旨在从原始测绘图中获得“洁净”的特征图像。

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Since characters and map symbols often overlap with useful image features, the algorithm of principal curve detection aims to obtain "clean" feature images from the original maps.

由于测绘图中的文字、符号常常与有意义的图像特征重叠，主曲线检测旨在从原始测绘图中获得“洁净”的特征图像。

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