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日本語: KX-153 高真空真空管 1940年 東京電気株式会社(東芝)製 東京工業大学博物館・百年記念館(2階:電気〜光/通信の先端研究史)所蔵 「東京工業大学での短波・超短波通信の実験に使われた真空管」
English: KX-153 High-vacuum tube made in 1940 by Toshiba; Tokyo Institute of Technology Museum, Centennial Memorial Hall, 2nd floor: "History of advanced research in electricity, light, communications - Shortwave at Tokyo Institute of Technology"; Vacuum tube used for VHF communication experiments
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