| 摘要 |
PROBLEM TO BE SOLVED: To provide a hollow block usable for multi-uses, and a using method of the hollow block. SOLUTION: This hollow block 1 is a hollow block 1 including a pair of face shells 2 and 3 and a web 4, and forming a cavity part 5 of the face shells 2 and 3 and the web 4. The face shells 2 and 3 have a large number of voids 6. COPYRIGHT: (C)2006,JPO&NCIPI
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