Westinghouse transformer (Rankin Kennedy, Electrical Installations, Vol II, 1909).jpg
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Westinghouse transformer (Rankin Kennedy, Electrical Installations, Vol II, 1909), Historic transformers, Scans from 'Rankin Kennedy, Electrical Installations, Vol II', 1909, Scans from 'Rankin Kennedy, Electrical Installations, Vol II', 1903/undescribed
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ウェスティングハウス変圧器
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