| 摘要 |
A building structure comprised of a plurality of precast slabs, each slab having a downwardly extending rim at its perimeter, and a pair of arms extending outwardly adjacent the bottoms of the rims at a pair of opposite sides of the slabs so as to form steps between upper surfaces of the arms and the upper surface of the slab, and a wall unit extending from an upper surface of each arm of a lower slab adjacent the outside of the rim to a corresponding lower surface of a corresponding arm of an upper slab, so as to support the upper slab.
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