The inside of the sleeve is shaped to match the cross section of the tube (12) and the outside has a non-circular shape.
套筒的内部被成形为与管子(12)的横截面相符合并且其外面具有非圆形形状。
The invention relates to a double-rectangular tube restraining type assembled buckling-restrained brace with an H-shaped cross section, belonging to the technical field of structural engineering.
双矩形管约束型H形截面装配式防屈曲耗能支撑，属于结构工程技术领域。
There are three kinds of cross-section for special-shaped concrete-filled steel tube compound columns. They are cross-shaped, T-shaped and L-shaped.
异形钢管混凝土组合柱最常见的截面形式有三种，即十字形、T形和L形。
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