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jacksonmoss 发表于 2013-12-7 10:27:31

求助 : BS EN 50464-4:2007+A1:2011

BS EN 50464-4:2007+A1:2011
Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV Requirements and tests concerning pressurised corrugated tanks

sigh007 发表于 2013-12-7 10:27:32

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