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mechen
发表于 2016-4-18 15:43:36
60 Excellent Inventions in Metal Forming by A. Erman Tekkaya, Werner Homberg
60 Excellent Inventions in Metal Forming by A. Erman Tekkaya, Werner Homberg
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发表于 2016-4-18 17:59:54
谢谢您的分享,金币已奖励!
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60 Excellent Inventions in Metal Forming by A. Erman Tekkaya, Werner Homberg