In accordance with the prop tree diagram theory, adding the marking stations, the path-marking model in accurate way changes he annular structure speedway network into the tree structure.

准确路径识别模型是指依据图的支撑树理论，添加标识站，把环形路网结构变为树状结构的模型。

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An algorithm is presented for complex maze by marking shortest path between the start point and current exploring point with recursive backtracking.

用标记每个搜索位置离起始位置最近距离的方法，通过递归函数求解，提出了一个对复杂迷宫的简明求解算法。

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The path marking model in probability way and the path marking model in accurate way can be applied for the annular structure speedway network.

对于环形路网结构分为概率路径识别模型和准确路径识别模型。

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Six of the recycled stone pillars marking the main paths up the mountain - Llanberis Path, Rhyd-Ddu Path, Snowdon Ranger Path, Miners Track and the Pyg Track - are being erected over the next few weeks.

BBC: Snowdon: Pillars to guide walkers on paths

The path leads past a dry-stone wall, marking the boundary of a nature reservation.

BBC: The perfect trip: Switzerland