在实数域分形盒维数计算方法的基础上，提出了双金字塔数据形式的盒维数快速计算方法。

In this paper, a fast approach for box dimension estimation based on a dual pyramid data structure is developed.

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本文介绍了球扁壳、回转壳、双曲壳及金字塔型网壳结构的设计和选型。

In this paper, designs and form selections on flat spherical shell, rotatory shell, curved surface shell and pyramidal shell are introduced.

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在双底或3重底的底部以后开始金字塔加码。

Pyramids should be started after double or triple bottoms.

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在双底或3重底的底部以后开始金字塔加码。

Pyramids should be started after double or triple bottoms.

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