摘要 |
<p>The structure has a set of cross section elements, each having a main axis parallel to one of three directions of a three-dimensional space and a cross section inscribable in a parallelogram of sides parallel to two directions of the space. The sections are oriented in identical manner and spaced from a distance equal to the side such that the element parallel to third direction is moved between two elements. The elements, which are connected to each other, constitute a wall that is maintained and guided in the translation movements through intersections (1, 2) with the walls of same type.</p> |