The graphic Numbers for a mine tunnel plan (1:200) is usually arranged clockwise or counterclockwise.

通常1：20 0巷道平面图的编号是按顺时针排列的或按逆时针排列的。

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The graphic Numbers for a mine tunnel plan (1:200) is usually arranged clockwise or counterclockwise.

通常1：20 0巷道平面图的编号是按顺时针排列的或按逆时针排列的。

youdao