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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 Dethridge wheel ： ウィキペディア英語版 Dethridge wheel The Dethridge wheel is used throughout Australia and in many other countries, including the United States, Israel and in Africa, to measure the flow of water delivered to farms for irrigation. The wheel consists of a drum on an axle, with eight v-shaped vanes fixed to the outside. It sits laterally across a channel and is turned by water flow. The revolving wheel measures flow from the irrigation supply channels into the farm channels, providing the basis upon which irrigation farmers are charged for water. Wheels generally last for 15 to 20 years, and the axle is replaced every 5 years. The wheel was invented by John Dethridge in Australia in 1910. Dethridge was then commissioner for the State Rivers and Water Supply Commission of Victoria. ==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「Dethridge wheel」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.