| 摘要 |
PROBLEM TO BE SOLVED: To provide a means for reducing the wear of a partition wall caused by stepstones inserted in a partition part. SOLUTION: This partition frame body is formed by inserting stepstones coated at the lower parts, into each partition part of the partition frame body having one or more partition parts for inserting the stepstones. Wear is reduced since the surfaces of the stepstones made of stones or concrete do not come in direct contact with the surface of the partition walls of the partition frame body. COPYRIGHT: (C)2006,JPO&NCIPI
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