In a polar circuit it causes the loop current to flow in a direction opposite to that for a mark impulse.

在极性电路中，空号脉冲促使环路电流向传号脉冲相反的方向流动。

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With the engineering survey control network, authors made a high precision orientation, measuring and control to basement, mine gallery wall of CSR beam loop by polar coordinates with total station.

采取工程测量控制网，对冷却储存环“S”形束流环的基础、坑道墙，采用全站仪按极坐标法进行高精度定位、测控。

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