绕转之后移动方向为自南向北，也是沿圆周的切线运动。

Both of approaching and returning movements are along the tangent of the circle.

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上盘岩块相对地变动不大，而其下的矿石带却具有许多切线运动的证据。

The hanging wall block is relatively little disturbed, but the ore zone beneath bears abundant evidence of tangential movements .

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小曲率和严重倾斜的支撑能在只允许切线运动的支撑上引起过度的侧向热力。

Sharp curvature and sharply skewed supports can cause excessive lateral thermal forces at supports if only tangential movement is permitted.

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