And then steel framing around the perimeter.
然后是周边的钢框架。
Steel framing
原声例句
切达科学解读
英语百科
Steel frame
Steel frame is a building technique with a "skeleton frame" of vertical steel columns and horizontal I-beams, constructed in a rectangular grid to support the floors, roof and walls of a building which are all attached to the frame. The development of this technique made the construction of the skyscraper possible.
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