nable123 发表于 2020-11-7 22:03:13

DIN 1654_Rev 1998-03

Copper and copper alloys-strip for springs and connectorsGerman version EN 1654: 1997
弹簧和连接器用铜和铜合金

admin 发表于 2020-11-16 08:43:37

谢谢您的分享,金币已奖励!
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