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。
2
The top and bottom steelsheet 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。
3
The top and the bottom steelsheet and HPL are punched to form ventilation holes.