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出典:Wiktionary
fermentation lock (複数形 fermentation locks)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/09 19:29 UTC 版)
The fermentation lock or airlock is a device used in beer brewing and wine making that allows carbon dioxide released by the beer to escape the fermenter, while not allowing air to enter the fermenter, thus avoiding oxidation.
Fermentation lock