| 摘要 |
<p>The panel (1), especially for a garage door or gate, has an inner layer (2) of a cellular material sandwiched between a layer of wood (3) and a sheet of metal (4), the different layers being joined together e.g. by adhesive. The wood panel is thick enough to allow it to be carved, while the metal sheet is thinner than the other two layers, but is of a metal providing a high level of rigidity.</p> |
