Размещено: 07 Июня в 06:21
Copper for Tomorrow: Sustainable copper production for a clean energy future
http://expectingtheunexpected.com/member.php?action=profile&uid=1891
Modern Uses For Copper
http://forumsevengroup.free.fr/viewtopic.php?p=49943#49943
How to solder a bare copper conductor?
http://expectingtheunexpected.com/showthread.php?tid=497&pid=14732#pid14732
History of Ancient Copper Smelting Pollution During Roman and Medieval Times Recorded in Greenland Ice
http://forum.yqlog.com/viewthread.php?tid=34552&page=1&authorid=50629
Solid vs Stranded Copper Wire
http://xianyu.imotor.com/viewthread.php?tid=284&pid=58309&page=1&extra=#pid58309
Why is copper so important?
http://forum.robomaniac.de/thread-4394.html
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