hugh1868 发表于 2011-8-31 07:32:05

IEC 60947-4-1：2009

IEC 60947-4-1-2009Low-voltage switchgear and controlgear Part 4-1 Contactors and motor-starters Electromechanical contactors and motor-starters

pigl 发表于 2011-8-31 12:09:15

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查看完整版本: IEC 60947-4-1：2009