| 摘要 |
<p>The load platform comprises a supporting panel mounted on blocks underneath. The panel (1) is formed by two metal plates (6,7), in which protrusions (8) are formed at intervals over their surfaces, by distortion of the material, and by which they are joined together. The protrusions can be hemispherical in shape, those on one plate having protruding spigots fitting in holes in those in the other and beaded over.</p> |
