offset distance

Inputting the offset distance: input it in the offset distance edit bar.

输入偏心距离：在偏心距编辑框中输入偏心距。

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By controlling the offset distance EXF of the axis of outer cutter head to ensure the tooth thickness, avoiding the helical angle and curvature deviation generated by the existing algorithms.

通过控制外刀盘回转中心的偏距EXF保证了轮齿的齿厚，避免了现有算法产生的螺旋角偏差和曲率偏差。

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For CMP gather seismic data, in common midpoint-half offset distance, the prestack double square root operator could be used to continuate and strip layer by layer.

对于CMP道集地震数据，在共中心点-半偏移距中，可以利用波动方程的叠前双平方根算子，实现延拓，进行层层剥离。

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Since general velocity analysis often ignores the quartic item of equation, time difference should be corrected for the data of the far offset distance, and its velocity analysis error influences the stacking quality of data.

由于常规速度分析一般忽略计算公式中的四次项，因此，对于较大偏移距的资料就存在校正时差的问题，其速度分析误差影响了资料的叠加质量。

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This dissertation presents a definition of general offset curve, which has fixed offset distance, but variable offset direction. The offset direction is defined by the local coordinate system, which is formed of the tangent vector and the normal vector of every point on the curve.

本文利用曲线上各点的切向量和法向量所形成的局部坐标系来确定等距方向，从而给出一种广义偏距曲线的新定义。

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