File:Extruded aluminium section x3.jpg

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描述 Three pieces of extruded aluminium. They are intended to be bolted together, using special connectors which fit into the ends and/or side groves, allowing for quick and neat construction of metal structures.
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來源 Photographed by User:Mike1024
作者 User Mike1024
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23 3 2007

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現時2007年3月23號 (五) 20:50響2007年3月23號 (五) 20:50嘅縮圖版本1,992 × 864（339 KB）Mike1024{{Information| |Description=Three pieces of extruded aluminium. They are intended to be bolted together, using special connectors which fit into the ends and/or side groves, allowing for quick and neat construction of metal structures.

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