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外文期刊>Electrical Engineers, Journal of the Institution of
>Discussion on ÃÂÿOil-less metalclad switchgear for medium-voltage alternating-current circuits up to 660 volts, 3-phaseÃÂÿ before the East Midland Sub-Centre, at Nottingham, 23rd April, 1940
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Discussion on ÃÂÿOil-less metalclad switchgear for medium-voltage alternating-current circuits up to 660 volts, 3-phaseÃÂÿ before the East Midland Sub-Centre, at Nottingham, 23rd April, 1940