In view of acoustic log of thin bed, a thick bed clipping thin bed model of constant well diameter was designed.

针对声波测井中的薄层问题，设计了井径不变情况下的厚层夹薄层模型。

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If approved by Lancashire County Council the well will be 8.5in (22cm) in diameter and extend approximately 1km from the current vertical well, more than a mile beneath the surface.

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The Siding Spring Observatory, located high in a remote area, is home to Australia's largest optical telescope, the 3.9m diameter Anglo-Australian Telescope, as well as several others.

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GPS, which uses signals from satellites, only works well outside and its co-ordinate system only identifies areas down to a few metres in diameter.

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