| 摘要 |
The trays are movable along beams (10) with a single-piece construction made from sheet metal. The beam cross-section comprises a flat vertical web part (11) in the middle, a U-shaped lower part (14) with one of the arms connected to the web part via a lower slanting part (15) and a rounded upper part (12) connected to the web part via an upper slanting part (13). The greenhouse has an upper level for cultivation and a lower level for cultivation and storing trays. The beams act as rails for the trays to be rolled along. |
