T he effectiveness of interval velocity time-depth conversion processing is mainly dependent on the correctness and rationality of the built velocity model of ti me-depth conversion.

层速度时深转换处理的效果，主要取决于所建立的时深转换速度模型的正确及合理性。

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There are two major factors that influence the correction and accuracy of interval velocity. One is the accuracy of reflection coefficient sequence used in interval velocity conversion;

理论分析和实际经验表明，影响层速度反演正确与否和精度的主要因素有两个：一是用于反演的反射系数序列的精度；

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Bearman's lineout catch and pass created sufficient space for Thomas to crash over and Arlidge's conversion and penalty slashed the interval deficit to just six points.

BBC: Dragons 13-26 Toulouse

Giteau's conversion made it 10-0 at the interval, James landing the hosts' first points on the resumption - and their first in 125 minutes of Test rugby - before giving way to Francois Steyn at fly-half after 55 minutes.

BBC: South Africa 15-27 Australia

Henry Paul, who switched to full-back following injury to Justin Brooker, kicked his second conversion to give Bradford a deserved eight-point interval lead.

BBC: Bulls charge Saints