| 摘要 |
<p>The greenhouse has a central passage in which it is possible to stand upright, with flowerbeds either side. Its lower part is of profiled components, particularly U-,T- or L-section concrete, partly buried. These profiled elements have transverse drillings (6) accommodating rods (7) or pipes, with fixing nuts (8) on the ends, so as to secure them rigidly together. Where the components are of U-section they can form troughs open towards the top, with the drillings in the upper part of their arms.</p> |
