采用数据文件插补和在线插补两种方案，解决了拉弯机位移控制中任意曲线的插补问题，实现了任意曲线轨迹的精确控制。

To solve the interpolation problem of random curve, the schemes of data file interpolation and on-line interpolation are used, which proves to be accurate.

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这些接触桥(3)向所述承插筒的中心朝里拱弯。

Contact links (3) are curved in an inward manner on the centre of the tip jack shaft.

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