| 摘要 |
The invention concerns an entirely hollow structure whereof the elements of which it is comprised are twisted filaments soaked in resin and whereof the shape represents a double triangulation (fig. 1). Said structure can be produced on a special machine not requiring a mould. Said structure is useful in the building sector (wall, floor, frame), floor for lorry, railway car, tube, bus, wind machine tower and the like. |
