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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク War tuba ： ウィキペディア英語版 War tuba The Japanese war tuba (known in Japanese as: 九〇式大空中聴音機, "Type 90 large air sound detector") is a colloquial name sometimes applied to Imperial Japanese Army acoustic locators due to the visual resemblance to the musical tuba. The name derived from a misidentification, possibly in jest, of a historical photo from the 1930s featuring the Japanese emperor Shōwa inspecting the acoustic locators with anti-aircraft guns in the background. ==Acoustic location== Acoustic location devices were used by military services from mid-World War I to the early years of World War II for the passive detection of approaching enemy aircraft by listening for the noise of their engines. These typically consisted of large acoustic horns attached to stethoscope-type earphones worn by monitors. This technology was rendered obsolete before and during World War II by the introduction of radar, which was far more effective. Some examples of parabolic concrete acoustic location mirrors can still be found on the seacoast of Britain to this day. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「War tuba」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.