将数学方法与地质实际相结合，严密推导出一个岩层真厚度计算的新公式。

Combined with mathematics and geological practice, a new expression for calculating true thickness of terrene is deduced.

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本文详细介绍了岩层真厚度计算公式，在袖珍计算器中进行计算程序编排的方法。

This paper introduces in detail the formula for calculating the true thickness of strata and the method for the programming of the calculation by use of the pocket calculator.

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通常由等厚线(或等值线)构成等厚图，展示岩石单位的(与真垂直厚度相对的)地层厚度。

Commonly, the isopachs, or contours that make up an isopach map, display the stratigraphic thickness of a rock unit as opposed to the true vertical thickness.

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通常由等厚线(或等值线)构成等厚图，展示岩石单位的(与真垂直厚度相对的)地层厚度。

Commonly, the isopachs, or contours that make up an isopach map, display the stratigraphic thickness of a rock unit as opposed to the true vertical thickness.

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