| 摘要 |
P/OPER/RSHI3I07414-CAP doc-9/11 l2(X17 -5 A spacer for concrete reinforcement, the spacer comprising a central post having at its upper end a seat for the reinforcement, and a substantially flat base with a central aperture, 5 the lower end of the central post being joined to the base by a pair of divergent beams extending to opposite sides of the aperture, the spacer being integrally formed as a one piece moulding. ,2 |
