The floor framing system above grade consists of structural steel beams spaced 3 m apart along the 9 m segments and structural steel trusses along the 13.5 m segments.是什么意思_The floor framing system above grade consists of structural steel beams spaced 3 m apart along the 9 m segments and structural steel trusses along the 13.5 m segments.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句