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File:Owsj deck fireproofing.jpg
来自维基百科,自由的百科全书
Found in articles
File:Owsj deck fireproofing.jpg
2347×1534× (483456 bytes) [[Metal]]
deck
and
OWSJ
(Open Web Steel Joist), receiving first coat of spray [[
fireproofing
]] [[plaster]], made of [[polystyrene]]