An example of North China Oil Field proves it feasible that people use iterative curved ray method to produce angular trace gather.

文中列举了华北油田的一个实例，说明迭代曲射线法求角道集是可行的。

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Then the trace gather undergoes velocity analysis, normal moveout correction and stack to bring seismic migrated section ( This is called scattering point imaging).

然后对该道集进行速度分析、动校正和叠加，得到偏移地震剖面，即共散射点成像。

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We know how such stories tend to function: they trace the sine wave of obscurity, glory, and setback and, in the process, gather Academy Awards for those in the central role.

NEWYORKER: Private Wars