On the basis of linear interpolation with point by point comparison method, a new method for linear interpolation with long axis regulation point by point comparison is put forward.
以逐点比较法直线插补为基础，提出了长轴调速逐点比较法直线插补的新方法。
Point-by-point Comparison interpolation is one method of the contour interpolation algorithms, ever used widely in CNC machine tools, but its being not to realize two-axis limits its application.
逐点比较法是轮廓插补算法之一，曾在数控机床中被广泛采用，但由于它存在不能实现两轴联动的缺点，限制了其应用。
Using this algorithm in the location problem of leak point shows that this method can find the leak point and the location precision can be increased by 0.96% in comparison with normal methods.
利用该算法对泄漏点定位，结果表明，该方法能够找到泄漏点，而且与常规方法相比精度提高0.96%。
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