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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 Rotameter (railway) ： ウィキペディア英語版 Rotameter (railway) The New South Wales Government Railways constructed in 1903 a device for measuring the length of its lines of railway. That authority named the machine a ''Rotameter''. It consisted of a four-wheel trolley with an additional large fifth wheel which traveled along the running surface of the rail. Its last recorded use was in the 1920s.〔"How Far is That? The Story of the NSWGR Rotameter" Australian Railway History, September, 2007 pp333-343〕 ==References== 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「Rotameter (railway)」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.