... Lightweight Steel Construction 轻钢结构 Lightweight Steel Shape 冷弯型钢 Lip Hat Section Steel 带缘帽型钢 ...
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Measure, cut, shape, assemble and join materials made of wood, wood substitutes, lightweight steel and other materials.
测量,切割,造型,组装,连接木材,木材的替代品,轻钢结构及其他材料制成的物品。
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