| 摘要 |
The module (1) has vertical side walls (2) and an upper assembly device configured to cooperate with a lower assembly device of a lower assembly of an adjacent module such that the adjacent module is fixed above the module. Square-shaped interfaces between the assembly devices have symmetry of order 4 with respect to a vertical axis such that the adjacent module is fixed above the module along same direction or rotated at an angle of 90, 180 or 270 degrees with respect to the module around the vertical axis. |
