特殊用法active following1.主动追[跟]踪boundary following1.边界跟踪contour following1.轮廓线跟踪dynamic track following1.动态磁迹跟踪load following1.负荷跟踪manual following1.手控[人工]跟踪target following1.目标跟踪track following1.磁道跟踪