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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 Shade balls ： ウィキペディア英語版 Shade balls Shade balls are small plastic spheres floated on top of a reservoir for environmental protection and to slow evaporation. ==Usage by LADWP== In 2014 and 2015, the Los Angeles Department of Water and Power deployed 96 million shade balls on its in response to the United States Environmental Protection Agency's surface water treatment rule, which requires large reservoirs to be covered. The LADWP claims that in addition to reducing evaporation, they will also reduce UV radiation by-products and algae growth. 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「Shade balls」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.