亚洲网紅露点

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rolled-steel joist

noun

  1. a steel beam, esp one with a cross section in the form of a letter H or I RSJ
鈥淐ollins English Dictionary 鈥 Complete & Unabridged鈥 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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rolled roastroller