The minimum reflection time section can be directly converted into depth section.

极小值时间剖面可直接作时深转换。

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This paper discusses the appearance of dipping plane interface and the formula of 3d migration for normal depth section and 3d migration in two steps.

本文讨论了倾斜平界面的表现形态和法向深度剖面的三维偏移归位公式，同时研究了二步法三维偏移。

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The paper presents a new way which can reduce the deficiency ot depth section design that is according to the structure diagram and real-time drilling data.

针对以往钻井地质设计中采用构造图结合实钻资料法进行剖面深度设计误差较大的不足，该文提出了一种新方法。

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You can always go to the BBC News website's in-depth section on savings and investments for the latest news and guides.

BBC: How to cope with financial difficulties

You can always go to the BBC News website's in-depth section on pensions which also explains the state of UK pensions in graphics. and includes a video guide to the different types of pension schemes.

BBC: How to cope with financial difficulties