The machine punches a row of holes in the metal sheet.
机器在金属薄板上冲出一排孔。
He hammered out the dents in the metal sheet.
他把金属板上的一些凹痕敲掉了。
The building is topped by a ventilated roof with a metal sheet covering.
建筑物上的可通风屋顶是由金属片覆盖的。
The mould jointing of metal sheet is a new method and die is key technology.
模压连接是一种新型金属连接方法，其关键技术是模具。
The mould jointing of metal sheet is a new method and die is key technology.
模压连接是一种新型金属连接方法，其关键技术是模具。
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