| 摘要 |
A transportable prebuilt room forming module for external attachment to the exterior of a building comprises an inner box defining a room and an outer box spaced from the inner box and defining an enclosure and risers and insulation between the two boxes and rigidly interconnecting them, the inner box including a sandwich type floor member interconnecting the walls of the room and a reinforced roof member also interconnecting the walls of the room.
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