折射率大约等于实际深度与视深度的比值。

The refractive index is approximately equal to the ratio of the real depth over the apparent depth.

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利用CDP道集，可以直接获得共中心点叠加时间剖面或视深度剖面，由此可转换为法向深度剖面。

By using the CDP gather, common-mid-point stacked time section or apparent depth section can directly be obtained, which can be converted into normal depth section.

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麦库姆博士说，这种鲨鱼不仅有不同凡响的向前“立体视觉”和深度知觉，而且有令人佩服的立体后视能力。

Dr McComb said that the sharks not only have outstanding forward "stereo-vision" and depth perception, but a respectable stereo rear view too.

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