Open the JPG file and you will notice a purple area highlighted.
This is the area to be formed and include perforations with a diameter of 1.00 mm on 60 degree angles in a diamond array pattern. For a total of 30% opening in the purple area.
这是表示产品上冲一系列小洞的，但是始终不理解这些小洞到底怎样排列。
This paragraph is about how to punch a series of perforations. But I can't make out how these perforations are punched, in what kind of pattern, what would they look like. Can you help me out?
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