作者: Gérald Garotte
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摘要: Reinforced section piece comprising a metal and reinforcing spacer piece, said having generally U-shaped cross-section with base portion, side wings extending perpendicularly on each from the transverse ends of inner surfaces facing other at an inside distance, body width that is slightly less than being configured to prevent lessening distance between two wings, additionally protuberances projecting outwards in direction, curved male piece.