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.

youdao

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.

youdao

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.

youdao