| 摘要 |
<p>The communication visual display panel has a number of relief or hollow surfaces designed to receive communications in the form of cards, bills or notices (2). Each compartment or each surface is separated from its neighbours by hollow or projecting ribs. The ribs also form means of reinforcing the face of the panel. The panel is thermally moulded from a sheet of plastics or metal. The compartments of the panel may have various regular or irregular geometric shapes.</p> |
