... 工字形箱 H-shaped box 工字形截面 I-shaped cross-section 工字形翼梁 I-section spar ...
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I-shaped cross section connecting rods are made of carbon steel.
工字型截面连接杆件是由碳制成。
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The bar steels adopt I steels, Angle steels or channel steels, or adopt steel plates which are welded into a cross shaped section.
型钢选用工字钢、角钢或槽钢，或者采用钢板焊接为“十”字型截面。
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