| 摘要 |
The mast includes a number of relatively spaced reinforced glass fibre plastics tubes (1). The tubes, preferably three, are arranged in an equi-lateral prism configuration and joined together at vertically spaced points via horizontal plates (2). Preferably, the plates are made of metal, fibre reinforced plastics, or a weather resistant wood products. Each of the tubes are formed from tubular sections (1',1'',1''') which are joined together via the horizontal plates. |
