rectangular steel pipe concrete column 矩形钢管混凝土柱
concrete-filled rectangular tubular column 方钢管混凝土柱
rectangular steel-tube concrete column 矩形钢管混凝土柱
rectangular concrete-filled tubular column 方钢管混凝土柱
concrete filled rectangular steel column 矩形钢管混凝土柱
rectangular concrete-filled steel tubular column 矩形钢管混凝土柱
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