sheet steel form 薄钢模板; 钢板模板; 钢模板 shell-lac and bone glue making equipment 骨胶用设备; 制虫胶 .
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Zinc can be used as a protective coating for iron and steel, and as a building or engineering material in the form of sheet zinc and zinc-alloy die-castings.
锌可用来作钢铁的保护层，还可制成锌板和锌合金压铸件用作建筑和工程材料。
The top and bottom steel sheet and HPL are punched to form ventilation holes.
地板的上下钢板和上表面贴面均冲制有通风孔。
The top and the bottom steel sheet and HPL are punched to form ventilation holes.
地板的上下钢板和上表面贴面均冲制有通风孔。
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