| 摘要 |
The structure comprises more than four bundles each constituted by a plurality of regularly spaced, parallel, rectilinear elements, the directions of at least five of said bundles being oriented parallel to at least five of the ten directions defined by the lines connecting the non-contiguous vertexes of a parallelepiped in two's and the bundles taken in three's not constituting a system in which each bundle is perpendicular to the other two. |
