| 摘要 |
PROBLEM TO BE SOLVED: To improve facility in positioning; and to prevent dislocation in the three-dimensional direction and the plane direction. SOLUTION: This mortar concrete product presents a square shape, and has respectively a projecting part 2 on one side surface, and a fitting hole 3 fitted by adapting the projecting part 2 to a position opposed to the projecting part 2, on the other side surface opposed to the one side surface. COPYRIGHT: (C)2005,JPO&NCIPI
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