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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 Level (logarithmic quantity) ： ウィキペディア英語版 Level (logarithmic quantity) In the International System of Quantities, the level of a quantity is the logarithm of the ratio of the value of that quantity to a reference value of the same quantity.〔ISO 80000-3:2006, ''Quantities and units'', Part 2: Space and Time〕〔W. M. Carey, Sound Sources and Levels in the Ocean, IEEE J Oceanic Eng 31:61-75(2006)〕 Examples are sound power level (literally, the level of the sound power, abbreviated SWL), sound exposure level (SEL), sound pressure level (SPL) and particle velocity level (SVL).〔ISO 80000-8:2007, ''Quantities and units'', Part 8: Acoustics〕 ==Mathematical definitions== 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「Level (logarithmic quantity)」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.